Muscle Tissue. C h a p t e r. PowerPoint Lecture Slides prepared by Jason LaPres Lone Star College - North Harris

Size: px
Start display at page:

Download "Muscle Tissue. C h a p t e r. PowerPoint Lecture Slides prepared by Jason LaPres Lone Star College - North Harris"

Transcription

1 C h a p t e r 10 Muscle Tissue PowerPoint Lecture Slides prepared by Jason LaPres Lone Star College - North Harris Copyright 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

2 An Introduction to Muscle Tissue Muscle Tissue A primary tissue type, divided into Skeletal muscle Cardiac muscle Smooth muscle

3 An Introduction to Muscle Tissue Skeletal Muscles Are attached to the skeletal system Allow us to move The muscular system Includes only skeletal muscles

4 Functions of Skeletal Muscles Produce skeletal movement Maintain body position Support soft tissues Guard openings Maintain body temperature Store nutrient reserves

5 Skeletal Muscle Structures Muscle tissue (muscle cells or fibers) Connective tissues Nerves Blood vessels

6 Skeletal Muscle Structures Organization of Connective Tissues Muscles have three layers of connective tissues Epimysium: exterior collagen layer connected to deep fascia Separates muscle from surrounding tissues Perimysium: surrounds muscle fiber bundles (fascicles) contains blood vessel and nerve supply to fascicles Endomysium: surrounds individual muscle cells (muscle fibers) contains capillaries and nerve fibers contacting muscle cells contains myosatellite cells (stem cells) that repair damage

7 Skeletal Muscle Structures Figure 10 1 The Organization of Skeletal Muscles.

8 Skeletal Muscle Structures Organization of Connective Tissues Muscle attachments Endomysium, perimysium, and epimysium come together: at ends of muscles to form connective tissue attachment to bone matrix i.e., tendon (bundle) or aponeurosis (sheet)

9 Skeletal Muscle Structures Nerves Skeletal muscles are voluntary muscles, controlled by nerves of the central nervous system (brain and spinal cord) Blood Vessels Muscles have extensive vascular systems that Supply large amounts of oxygen Supply nutrients Carry away wastes

10 Skeletal Muscle Fibers Are very long Develop through fusion of mesodermal cells (myoblasts) Become very large Contain hundreds of nuclei

11 Skeletal Muscle Fibers Figure 10 2 The Formation of a Multinucleate Skeletal Muscle Fiber.

12 Skeletal Muscle Fibers Figure 10 2a The Formation of a Multinucleate Skeletal Muscle Fiber.

13 Skeletal Muscle Fibers Figure 10 2b The Formation of a Multinucleate Skeletal Muscle Fiber.

14 Skeletal Muscle Fibers Internal Organization of Muscle Fibers The sarcolemma The cell membrane of a muscle fiber (cell) Surrounds the sarcoplasm (cytoplasm of muscle fiber) A change in transmembrane potential begins contractions

15 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Transverse tubules (T tubules) Transmit action potential through cell Allow entire muscle fiber to contract simultaneously Have same properties as sarcolemma

16 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Myofibrils Lengthwise subdivisions within muscle fiber Made up of bundles of protein filaments (myofilaments) Myofilaments are responsible for muscle contraction Types of myofilaments: thin filaments:» made of the protein actin thick filaments:» made of the protein myosin

17 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Sarcoplasmic reticulum (SR) A membranous structure surrounding each myofibril Helps transmit action potential to myofibril Similar in structure to smooth endoplasmic reticulum Forms chambers (terminal cisternae) attached to T tubules

18 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Triad Is formed by one T tubule and two terminal cisternae Cisternae: concentrate Ca 2+ (via ion pumps) release Ca 2+ into sarcomeres to begin muscle contraction

19 Skeletal Muscle Fibers Figure 10 3 The Structure of a Skeletal Muscle Fiber.

20 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Sarcomeres The contractile units of muscle Structural units of myofibrils Form visible patterns within myofibrils Muscle striations A striped or striated pattern within myofibrils: alternating dark, thick filaments (A bands) and light, thin filaments (I bands)

21 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Sarcomeres M Lines and Z Lines: M line:» the center of the A band» at midline of sarcomere Z lines:» the centers of the I bands» at two ends of sarcomere

22 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Sarcomeres Zone of overlap: the densest, darkest area on a light micrograph where thick and thin filaments overlap The H Band: the area around the M line has thick filaments but no thin filaments

23 Skeletal Muscle Fibers Internal Organization of Muscle Fibers Sarcomeres Titin: are strands of protein reach from tips of thick filaments to the Z line stabilize the filaments

24 Skeletal Muscle Fibers Figure 10 4a Sarcomere Structure.

25 Skeletal Muscle Fibers Figure 10 4b Sarcomere Structure.

26 Skeletal Muscle Fibers Figure 10 5 Sarcomere Structure.

27 Skeletal Muscle Fibers Figure 10 6 Levels of Functional Organization in a Skeletal Muscle.

28 Skeletal Muscle Fibers Figure 10 6 Levels of Functional Organization in a Skeletal Muscle.

29 Skeletal Muscle Fibers Sarcomere Function Transverse tubules encircle the sarcomere near zones of overlap Ca 2+ released by SR causes thin and thick filaments to interact

30 Skeletal Muscle Fibers Muscle Contraction Is caused by interactions of thick and thin filaments Structures of protein molecules determine interactions

31 Skeletal Muscle Fibers Four Thin Filament Proteins F-actin (Filamentous actin) Is two twisted rows of globular G-actin The active sites on G-actin strands bind to myosin Nebulin Holds F-actin strands together Tropomyosin Is a double strand Prevents actin myosin interaction Troponin A globular protein Binds tropomyosin to G-actin Controlled by Ca 2+

32 Skeletal Muscle Fibers Figure 10 7a, b Thick and Thin Filaments.

33 Skeletal Muscle Fibers Initiating Contraction Ca 2+ binds to receptor on troponin molecule Troponin tropomyosin complex changes Exposes active site of F-actin

34 Skeletal Muscle Fibers Thick Filaments Contain twisted myosin subunits Contain titin strands that recoil after stretching The mysosin molecule Tail: binds to other myosin molecules Head: made of two globular protein subunits reaches the nearest thin filament

35 Skeletal Muscle Fibers Figure 10 7c, d Thick and Thin Filaments.

36 Skeletal Muscle Fibers Myosin Action During contraction, myosin heads Interact with actin filaments, forming cross-bridges Pivot, producing motion

37 Skeletal Muscle Fibers Skeletal Muscle Contraction Sliding filament theory Thin filaments of sarcomere slide toward M line, alongside thick filaments The width of A zone stays the same Z lines move closer together

38 Skeletal Muscle Fibers Figure 10 8a Changes in the Appearance of a Sarcomere during the Contraction of a Skeletal Muscle Fiber.

39 Skeletal Muscle Fibers Figure 10 8b Changes in the Appearance of a Sarcomere during the Contraction of a Skeletal Muscle Fiber.

40 Skeletal Muscle Fibers Skeletal Muscle Contraction The process of contraction Neural stimulation of sarcolemma: causes excitation contraction coupling Cisternae of SR release Ca 2+ : which triggers interaction of thick and thin filaments consuming ATP and producing tension

41 Skeletal Muscle Fibers Figure 10 9 An Overview of Skeletal Muscle Contraction.

42 The Neuromuscular Junction Is the location of neural stimulation Action potential (electrical signal) Travels along nerve axon Ends at synaptic terminal Synaptic terminal: releases neurotransmitter (acetylcholine or ACh) into the synaptic cleft (gap between synaptic terminal and motor end plate)

43 The Neuromuscular Junction Figure 10 10a, b Skeletal Muscle Innervation.

44 The Neuromuscular Junction Figure 10 10c Skeletal Muscle Innervation.

45 The Neuromuscular Junction Figure 10 10c Skeletal Muscle Innervation.

46 The Neuromuscular Junction The Neurotransmitter Acetylcholine or ACh Travels across the synaptic cleft Binds to membrane receptors on sarcolemma (motor end plate) Causes sodium ion rush into sarcoplasm Is quickly broken down by enzyme (acetylcholinesterase or AChE)

47 The Neuromuscular Junction Figure 10 10c Skeletal Muscle Innervation.

48 The Neuromuscular Junction Action Potential Generated by increase in sodium ions in sarcolemma Travels along the T tubules Leads to excitation contraction coupling Excitation contraction coupling: action potential reaches a triad:» releasing Ca 2+» triggering contraction requires myosin heads to be in cocked position:» loaded by ATP energy

49 The Neuromuscular Junction Figure The Exposure of Active Sites.

50 The Contraction Cycle Five Steps of the Contraction Cycle Exposure of active sites Formation of cross-bridges Pivoting of myosin heads Detachment of cross-bridges Reactivation of myosin

51 The Contraction Cycle Figure The Contraction Cycle.

52 The Contraction Cycle [INSERT FIG , step 1] Figure The Contraction Cycle.

53 The Contraction Cycle Figure The Contraction Cycle.

54 The Contraction Cycle Figure The Contraction Cycle.

55 The Contraction Cycle Figure The Contraction Cycle.

56 The Contraction Cycle Figure The Contraction Cycle.

57 The Contraction Cycle Fiber Shortening As sarcomeres shorten, muscle pulls together, producing tension Contraction Duration Depends on Duration of neural stimulus Number of free calcium ions in sarcoplasm Availability of ATP

58 The Contraction Cycle Figure Shortening during a Contraction.

59 The Contraction Cycle Relaxation Ca 2+ concentrations fall Ca 2+ detaches from troponin Active sites are re-covered by tropomyosin Sarcomeres remain contracted Rigor Mortis A fixed muscular contraction after death Caused when Ion pumps cease to function; ran out of ATP Calcium builds up in the sarcoplasm

60 The Contraction Cycle Skeletal muscle fibers shorten as thin filaments slide between thick filaments Free Ca 2+ in the sarcoplasm triggers contraction SR releases Ca 2+ when a motor neuron stimulates the muscle fiber Contraction is an active process Relaxation and return to resting length are passive

61 The Contraction Cycle

62 Tension Production The all or none principle As a whole, a muscle fiber is either contracted or relaxed Tension of a Single Muscle Fiber Depends on The number of pivoting cross-bridges The fiber s resting length at the time of stimulation The frequency of stimulation

63 Tension Production Tension of a Single Muscle Fiber Length tension relationship Number of pivoting cross-bridges depends on: amount of overlap between thick and thin fibers Optimum overlap produces greatest amount of tension: too much or too little reduces efficiency Normal resting sarcomere length: is 75% to 130% of optimal length

64 Tension Production Figure The Effect of Sarcomere Length on Active Tension.

65 Tension Production Tension of a Single Muscle Fiber Frequency of stimulation A single neural stimulation produces: a single contraction or twitch which lasts about msec. Sustained muscular contractions: require many repeated stimuli

66 Tension Production Three Phases of Twitch Latent period before contraction The action potential moves through sarcolemma Causing Ca 2+ release Contraction phase Calcium ions bind Tension builds to peak Relaxation phase Ca 2+ levels fall Active sites are covered Tension falls to resting levels

67 Tension Production Figure The Development of Tension in a Twitch.

68 Tension Production Figure The Development of Tension in a Twitch.

69 Tension Production Treppe A stair-step increase in twitch tension Repeated stimulations immediately after relaxation phase Stimulus frequency <50/second Causes a series of contractions with increasing tension

70 Tension Production Tension of a Single Muscle Fiber Wave summation Increasing tension or summation of twitches Repeated stimulations before the end of relaxation phase: stimulus frequency >50/second Causes increasing tension or summation of twitches

71 Tension Production Tension of a Single Muscle Fiber Incomplete tetanus Twitches reach maximum tension If rapid stimulation continues and muscle is not allowed to relax, twitches reach maximum level of tension Complete Tetanus If stimulation frequency is high enough, muscle never begins to relax, and is in continuous contraction

72 Tension Production Figure Effects of Repeated Stimulations.

73 Tension Production Figure Effects of Repeated Stimulations.

74 Tension Production Tension Produced by Whole Skeletal Muscles Depends on Internal tension produced by muscle fibers External tension exerted by muscle fibers on elastic extracellular fibers Total number of muscle fibers stimulated

75 Tension Production Tension Produced by Whole Skeletal Muscles Motor units in a skeletal muscle Contain hundreds of muscle fibers That contract at the same time Controlled by a single motor neuron

76 Tension Production Tension Produced by Whole Skeletal Muscles Recruitment (multiple motor unit summation) In a whole muscle or group of muscles, smooth motion and increasing tension are produced by slowly increasing the size or number of motor units stimulated Maximum tension Achieved when all motor units reach tetanus Can be sustained only a very short time

77 Tension Production Figure The Arrangement and Activity of Motor Units in a Skeletal Muscle.

78 Tension Production Figure The Arrangement and Activity of Motor Units in a Skeletal Muscle.

79 Tension Production Tension Produced by Whole Skeletal Muscles Sustained tension Less than maximum tension Allows motor units rest in rotation Muscle tone The normal tension and firmness of a muscle at rest Muscle units actively maintain body position, without motion Increasing muscle tone increases metabolic energy used, even at rest

80 Tension Production Two Types of Skeletal Muscle Tension Isotonic contraction Isometric contraction

81 Tension Production Two Types of Skeletal Muscle Tension Isotonic Contraction Skeletal muscle changes length: resulting in motion If muscle tension > load (resistance): muscle shortens (concentric contraction) If muscle tension < load (resistance): muscle lengthens (eccentric contraction)

82 Tension Production Two Types of Skeletal Muscle Tension Isometric contraction Skeletal muscle develops tension, but is prevented from changing length Note: iso- = same, metric = measure

83 Tension Production Figure 10 18a, b Isotonic and Isometric Contractions.

84 Tension Production Figure 10 18c, d Isotonic and Isometric Contractions.

85 Tension Production Resistance and Speed of Contraction Are inversely related The heavier the load (resistance) on a muscle The longer it takes for shortening to begin And the less the muscle will shorten Muscle Relaxation After contraction, a muscle fiber returns to resting length by Elastic forces Opposing muscle contractions Gravity

86 Tension Production Figure Load and Speed of Contraction.

87 Tension Production Elastic Forces The pull of elastic elements (tendons and ligaments) Expands the sarcomeres to resting length Opposing Muscle Contractions Reverse the direction of the original motion Are the work of opposing skeletal muscle pairs

88 Tension Production Gravity Can take the place of opposing muscle contraction to return a muscle to its resting state

89 ATP and Muscle Contraction Sustained muscle contraction uses a lot of ATP energy Muscles store enough energy to start contraction Muscle fibers must manufacture more ATP as needed

90 ATP and Muscle Contraction ATP and CP Reserves Adenosine triphosphate (ATP) The active energy molecule Creatine phosphate (CP) The storage molecule for excess ATP energy in resting muscle Energy recharges ADP to ATP Using the enzyme creatine phosphokinase (CPK or CK) When CP is used up, other mechanisms generate ATP

91 ATP and Muscle Contraction ATP Generation Cells produce ATP in two ways Aerobic metabolism of fatty acids in the mitochondria Anaerobic glycolysis in the cytoplasm

92 ATP and Muscle Contraction ATP Generation Aerobic metabolism Is the primary energy source of resting muscles Breaks down fatty acids Produces 34 ATP molecules per glucose molecule Anaerobic glycolysis Is the primary energy source for peak muscular activity Produces two ATP molecules per molecule of glucose Breaks down glucose from glycogen stored in skeletal muscles

93 ATP and Muscle Contraction

94 ATP and Muscle Contraction Energy Use and Muscle Activity At peak exertion Muscles lack oxygen to support mitochondria Muscles rely on glycolysis for ATP Pyruvic acid builds up, is converted to lactic acid

95 ATP and Muscle Contraction Figure Muscle Metabolism.

96 ATP and Muscle Contraction Figure 10 20a Muscle Metabolism.

97 ATP and Muscle Contraction Figure 10 20b Muscle Metabolism.

98 ATP and Muscle Contraction Figure 10 20c Muscle Metabolism.

99 ATP and Muscle Contraction Muscle Fatigue When muscles can no longer perform a required activity, they are fatigued Results of Muscle Fatigue Depletion of metabolic reserves Damage to sarcolemma and sarcoplasmic reticulum Low ph (lactic acid) Muscle exhaustion and pain

100 ATP and Muscle Contraction The Recovery Period The time required after exertion for muscles to return to normal Oxygen becomes available Mitochondrial activity resumes

101 ATP and Muscle Contraction The Cori Cycle The removal and recycling of lactic acid by the liver Liver converts lactic acid to pyruvic acid Glucose is released to recharge muscle glycogen reserves Oxygen Debt After exercise or other exertion The body needs more oxygen than usual to normalize metabolic activities Resulting in heavy breathing

102 ATP and Muscle Contraction Skeletal muscles at rest metabolize fatty acids and store glycogen During light activity, muscles generate ATP through anaerobic breakdown of carbohydrates, lipids, or amino acids At peak activity, energy is provided by anaerobic reactions that generate lactic acid as a byproduct

103 ATP and Muscle Contraction Heat Production and Loss Active muscles produce heat Up to 70% of muscle energy can be lost as heat, raising body temperature Hormones and Muscle Metabolism Growth hormone Testosterone Thyroid hormones Epinephrine

104 ATP and Muscle Contraction Muscle Performance Power The maximum amount of tension produced Endurance The amount of time an activity can be sustained Power and endurance depend on The types of muscle fibers Physical conditioning

105 Muscle Fiber Types Three Types of Skeletal Muscle Fibers Fast fibers Slow fibers Intermediate fibers

106 Muscle Fiber Types Three Types of Skeletal Muscle Fibers Fast fibers Contract very quickly Have large diameter, large glycogen reserves, few mitochondria Have strong contractions, fatigue quickly

107 Muscle Fiber Types Three Types of Skeletal Muscle Fibers Slow fibers Are slow to contract, slow to fatigue Have small diameter, more mitochondria Have high oxygen supply Contain myoglobin (red pigment, binds oxygen)

108 Muscle Fiber Types Three Types of Skeletal Muscle Fibers Intermediate fibers Are mid-sized Have low myoglobin Have more capillaries than fast fibers, slower to fatigue

109 Muscle Fiber Types Figure Fast versus Slow Fibers.

110 Muscle Fiber Types

111 Muscle Fiber Types Muscles and Fiber Types White muscle Mostly fast fibers Pale (e.g., chicken breast) Red muscle Mostly slow fibers Dark (e.g., chicken legs) Most human muscles Mixed fibers Pink

112 Muscle Fiber Types Muscle Hypertrophy Muscle growth from heavy training Increases diameter of muscle fibers Increases number of myofibrils Increases mitochondria, glycogen reserves Muscle Atrophy Lack of muscle activity Reduces muscle size, tone, and power

113 Muscle Fiber Types Physical Conditioning Improves both power and endurance Anaerobic activities (e.g., 50-meter dash, weightlifting): use fast fibers fatigue quickly with strenuous activity Improved by: frequent, brief, intensive workouts hypertrophy

114 Muscle Fiber Types Physical Conditioning Improves both power and endurance Aerobic activities (prolonged activity): supported by mitochondria require oxygen and nutrients Improved by: repetitive training (neural responses) cardiovascular training

115 Muscle Fiber Types What you don t use, you lose Muscle tone indicates base activity in motor units of skeletal muscles Muscles become flaccid when inactive for days or weeks Muscle fibers break down proteins, become smaller and weaker With prolonged inactivity, fibrous tissue may replace muscle fibers

116 Cardiac Muscle Tissue Structure of Cardiac Tissue Cardiac muscle is striated, found only in the heart

117 Cardiac Muscle Tissue Seven Characteristics of Cardiocytes Unlike skeletal muscle, cardiac muscle cells (cardiocytes) Are small Have a single nucleus Have short, wide T tubules Have no triads Have SR with no terminal cisternae Are aerobic (high in myoglobin, mitochondria) Have intercalated discs

118 Cardiac Muscle Tissue Intercalated Discs Are specialized contact points between cardiocytes Join cell membranes of adjacent cardiocytes (gap junctions, desmosomes) Functions of intercalated discs Maintain structure Enhance molecular and electrical connections Conduct action potentials

119 Cardiac Muscle Tissue Figure Cardiac Muscle Tissue.

120 Cardiac Muscle Tissue Figure 10 22a Cardiac Muscle Tissue.

121 Cardiac Muscle Tissue Figure 10 22c Cardiac Muscle Tissue.

122 Cardiac Muscle Tissue Intercalated Discs Coordination of cardiocytes Because intercalated discs link heart cells mechanically, chemically, and electrically, the heart functions like a single, fused mass of cells

123 Cardiac Muscle Tissue Four Functions of Cardiac Tissue Automaticity Contraction without neural stimulation Controlled by pacemaker cells Variable contraction tension Controlled by nervous system Extended contraction time Ten times as long as skeletal muscle Prevention of wave summation and tetanic contractions by cell membranes Long refractory period

124 Smooth Muscle Tissue Smooth Muscle in Body Systems Forms around other tissues In blood vessels Regulates blood pressure and flow In reproductive and glandular systems Produces movements In digestive and urinary systems Forms sphincters Produces contractions In integumentary system Arrector pili muscles cause goose bumps

125 Smooth Muscle Tissue Structure of Smooth Muscle Nonstriated tissue Different internal organization of actin and myosin Different functional characteristics

126 Smooth Muscle Tissue Figure 10 23a Smooth Muscle Tissue.

127 Smooth Muscle Tissue Figure 10 23b Smooth Muscle Tissue.

128 Smooth Muscle Tissue Eight Characteristics of Smooth Muscle Cells Long, slender, and spindle shaped Have a single, central nucleus Have no T tubules, myofibrils, or sarcomeres Have no tendons or aponeuroses Have scattered myosin fibers Myosin fibers have more heads per thick filament Have thin filaments attached to dense bodies Dense bodies transmit contractions from cell to cell

129 Smooth Muscle Tissue Functional Characteristics of Smooth Muscle Excitation contraction coupling Length tension relationships Control of contractions Smooth muscle tone

130 Smooth Muscle Tissue Functional Characteristics of Smooth Muscle Excitation contraction coupling Free Ca 2+ in cytoplasm triggers contraction Ca 2+ binds with calmodulin: in the sarcoplasm activates myosin light chain kinase Enzyme breaks down ATP, initiates contraction

131 Smooth Muscle Tissue Functional Characteristics of Smooth Muscle Length Tension Relationships Thick and thin filaments are scattered Resting length not related to tension development Functions over a wide range of lengths (plasticity)

132 Smooth Muscle Tissue Functional Characteristics of Smooth Muscle Control of contractions Multiunit smooth muscle cells: connected to motor neurons Visceral smooth muscle cells: not connected to motor neurons rhythmic cycles of activity controlled by pacesetter cells

133 Smooth Muscle Tissue Functional Characteristics of Smooth Muscle Smooth muscle tone Maintains normal levels of activity Modified by neural, hormonal, or chemical factors

134 Comparing Muscle Tissues

135 Comparing Muscle Tissues

Chapter 10: Muscle Tissue

Chapter 10: Muscle Tissue Chapter 10: Muscle Tissue Muscle is one of the 4 primary types of tissue. It is subdivided into skeletal, cardiac and smooth muscle. I. Skeletal Muscle Tissue and the Muscular System, p. 284 Objective

More information

MUSCLE TISSUE (MUSCLE PHYSIOLOGY) PART I: MUSCLE STRUCTURE

MUSCLE TISSUE (MUSCLE PHYSIOLOGY) PART I: MUSCLE STRUCTURE PART I: MUSCLE STRUCTURE Muscle Tissue A primary tissue type, divided into: skeletal muscle cardiac muscle smooth muscle Functions of Skeletal Muscles Produce skeletal movement Maintain body position Support

More information

Muscle Tissue. PowerPoint Lecture Presentations prepared by Jason LaPres. Lone Star College North Harris Pearson Education, Inc.

Muscle Tissue. PowerPoint Lecture Presentations prepared by Jason LaPres. Lone Star College North Harris Pearson Education, Inc. 10 Muscle Tissue PowerPoint Lecture Presentations prepared by Jason LaPres Lone Star College North Harris An Introduction to Muscle Tissue Muscle Tissue A primary tissue type, divided into: Skeletal muscle

More information

Muscle Tissue- 3 Types

Muscle Tissue- 3 Types AN INTRODUCTION TO MUSCLE TISSUE Muscle Tissue- 3 Types Skeletal muscle (focus on these) Cardiac muscle Smooth muscle FUNCTIONS OF SKELETAL MUSCLES Produce movement of the skeleton Maintain posture and

More information

Chapter 10 Muscle Tissue Lecture Outline

Chapter 10 Muscle Tissue Lecture Outline Chapter 10 Muscle Tissue Lecture Outline Muscle tissue types 1. Skeletal muscle = voluntary striated 2. Cardiac muscle = involuntary striated 3. Smooth muscle = involuntary nonstriated Characteristics

More information

Muscle Tissue. PowerPoint Lecture Presentations prepared by Jason LaPres. Lone Star College North Harris Pearson Education, Inc.

Muscle Tissue. PowerPoint Lecture Presentations prepared by Jason LaPres. Lone Star College North Harris Pearson Education, Inc. 10 Muscle Tissue PowerPoint Lecture Presentations prepared by Jason LaPres Lone Star College North Harris 10-1 An Introduction to Muscle Tissue Learning Outcomes 10-1 Specify the functions of skeletal

More information

Muscle and Muscle Tissue

Muscle and Muscle Tissue Muscle and Muscle Tissue Make up about half of total body mass Exerts force by converting chemical energy, ATP, to mechanical energy Muscle tissue is classified based on Shape Number and position of nuclei

More information

1/4/2017. Introduction. Connective Tissue Coverings. 9.1: Structure of a Skeletal Muscle. Skeletal Muscle Fibers. Connective Tissue Coverings

1/4/2017. Introduction. Connective Tissue Coverings. 9.1: Structure of a Skeletal Muscle. Skeletal Muscle Fibers. Connective Tissue Coverings Introduction Chapter 09 Lecture Outline See separate PowerPoint slides for all figures and tables preinserted into PowerPoint without notes. Copyright McGraw-Hill Education. Permission required for reproduction

More information

Skeletal Muscle. Connective tissue: Binding, support and insulation. Blood vessels

Skeletal Muscle. Connective tissue: Binding, support and insulation. Blood vessels Chapter 12 Muscle Physiology Outline o Skeletal Muscle Structure o The mechanism of Force Generation in Muscle o The mechanics of Skeletal Muscle Contraction o Skeletal Muscle Metabolism o Control of Skeletal

More information

MODULE 6 MUSCLE PHYSIOLOGY

MODULE 6 MUSCLE PHYSIOLOGY MODULE 6 MUSCLE PHYSIOLOGY III SEMESTER BOTANY Syllabi: Striated, Non striated and Cardiac muscle, Ultra structure of striated muscle fibre, Mechanism of muscle contraction, Threshold and spike potential,

More information

Page 1. Chapter 9: Muscle Tissue. Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle. Gross Anatomy of Muscle:

Page 1. Chapter 9: Muscle Tissue. Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle. Gross Anatomy of Muscle: 1 Chapter 9: Muscle Tissue Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle Characteristics: Attaches to skeleton Voluntary control Striated / multi-nucleated Characteristics: Composes

More information

Page 1. Chapter 9: Muscle Tissue. Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle. Characteristics of Muscle:

Page 1. Chapter 9: Muscle Tissue. Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle. Characteristics of Muscle: 1 Chapter 9: Muscle Tissue Muscle little mouse Types of Muscle Tissue: Skeletal Muscle Cardiac Muscle Smooth Muscle Characteristics: Attaches to skeleton Voluntary control Striated / multi-nucleated Characteristics:

More information

Chapter 9 - Muscle and Muscle Tissue

Chapter 9 - Muscle and Muscle Tissue Chapter 9 - Muscle and Muscle Tissue I. Overview of muscle tissue A. Three muscle types in the body: B. Special characteristics 1. Excitability: able to receive and respond to a stimulus 2. Contractility:

More information

Anatomy and Physiology 1 Chapter 10 self quiz Pro, Dima Darwish,MD.

Anatomy and Physiology 1 Chapter 10 self quiz Pro, Dima Darwish,MD. Anatomy and Physiology 1 Chapter 10 self quiz Pro, Dima Darwish,MD. 1) Which of the following is a recognized function of skeletal muscle? A) produce movement B) maintain posture C) maintain body temperature

More information

Lecture 9A. Muscle structure. Outline

Lecture 9A. Muscle structure. Outline Lecture 9A Muscle structure Outline Smooth, skeletal, and cardiac muscle tissues Structure and function of skeletal muscle cells. Sarcomeres structure and contraction Actin-myosin interaction and sliding

More information

Lecture Overview. Muscular System. Marieb s Human Anatomy and Physiology. Chapter 9 Muscles and Muscle Tissue Lecture 16

Lecture Overview. Muscular System. Marieb s Human Anatomy and Physiology. Chapter 9 Muscles and Muscle Tissue Lecture 16 Marieb s Human Anatomy and Physiology Marieb Hoehn Chapter 9 Muscles and Muscle Tissue Lecture 16 1 Lecture Overview Types, characteristics, functions of muscle Structure of skeletal muscle Mechanism of

More information

Skeletal Muscle Tissue

Skeletal Muscle Tissue Functions of Skeletal Muscle Skeletal Muscle Tissue Keri Muma Bio 6 Movement muscles attach directly or indirectly to bone, pull on bone or tissue when they contract Maintain posture / body position muscles

More information

Human Anatomy. Muscle Tissue and Organization. DR.SADIQ ALI (K.E Medalist) 10-1

Human Anatomy. Muscle Tissue and Organization. DR.SADIQ ALI (K.E Medalist) 10-1 Human Anatomy Muscle Tissue and Organization DR.SADIQ ALI (K.E Medalist) 10-1 Tissue and Organization Over 700 skeletal muscles have been named. Form the muscular system. Muscle tissue is distributed almost

More information

Muscles and Muscle Tissue

Muscles and Muscle Tissue 1 Muscles and Muscle Tissue Chapter 9 2 Overview of Muscle Tissues Compare and Contrast the three basic types of muscle tissue List four important functions of muscle tissue 3 Muscle Terminology Muscle

More information

Chapter 8 Notes. Muscles

Chapter 8 Notes. Muscles Chapter 8 Notes Muscles 8.1 Intro Three muscle types Skeletal Smooth cardiac 8.2 Structure of Skeletal Muscle Composition Skeletal muscle tissue Nervous tissue Blood Connective tissue Connective tissue

More information

Chapter 10! Chapter 10, Part 2 Muscle. Muscle Tissue - Part 2! Pages !

Chapter 10! Chapter 10, Part 2 Muscle. Muscle Tissue - Part 2! Pages ! ! Chapter 10, Part 2 Muscle Chapter 10! Muscle Tissue - Part 2! Pages 308-324! SECTION 10-5! Sarcomere shortening and muscle fiber stimulation produce tension! 2! Tension Production - Muscle FIBER! All-or-none

More information

Microanatomy of Muscles. Anatomy & Physiology Class

Microanatomy of Muscles. Anatomy & Physiology Class Microanatomy of Muscles Anatomy & Physiology Class Three Main Muscle Types Objectives: By the end of this presentation you will have the information to: 1. 2. 3. 4. 5. 6. Describe the 3 main types of muscles.

More information

Skeletal Muscle. Skeletal Muscle

Skeletal Muscle. Skeletal Muscle Skeletal Muscle Skeletal Muscle Types of muscle Skeletal muscle-moves the skeleton by pulling on the tendons that are connected to the bones Cardiac muscle-pumps blood through the heart and blood vessels

More information

Muscle Tissue. Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology

Muscle Tissue. Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology Muscle Tissue Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology Functions of muscle tissue Movement Maintenance of posture Joint stabilization Heat generation Tendon Belly Tendon Types of

More information

About This Chapter. Skeletal muscle Mechanics of body movement Smooth muscle Cardiac muscle Pearson Education, Inc.

About This Chapter. Skeletal muscle Mechanics of body movement Smooth muscle Cardiac muscle Pearson Education, Inc. About This Chapter Skeletal muscle Mechanics of body movement Smooth muscle Cardiac muscle Skeletal Muscle Usually attached to bones by tendons Origin: closest to the trunk or to more stationary bone Insertion:

More information

Smooth Cardiac Skeletal Location Around tubes Heart tissue attached to skeleton Moves stuff thru Heart beat pumps Moves body parts

Smooth Cardiac Skeletal Location Around tubes Heart tissue attached to skeleton Moves stuff thru Heart beat pumps Moves body parts Biology 067 - Muscular system A. Type of muscles: Smooth Cardiac Skeletal Location Around tubes Heart tissue attached to skeleton Function Moves stuff thru Heart beat pumps Moves body parts tubes blood

More information

Hole s Human Anatomy and Physiology Eleventh Edition. Mrs. Hummer. Chapter 9 Muscular System

Hole s Human Anatomy and Physiology Eleventh Edition. Mrs. Hummer. Chapter 9 Muscular System Hole s Human Anatomy and Physiology Eleventh Edition Mrs. Hummer Chapter 9 Muscular System 1 Chapter 9 Muscular System Skeletal Muscle usually attached to bones under conscious control striated Three Types

More information

Chapter 10! Muscle Tissue - Part 2! Pages ! SECTION 10-5! Sarcomere shortening and muscle fiber stimulation produce tension!

Chapter 10! Muscle Tissue - Part 2! Pages ! SECTION 10-5! Sarcomere shortening and muscle fiber stimulation produce tension! ! Chapter 10, Part 2 Muscle Chapter 10! Muscle Tissue - Part 2! Pages 308-324! SECTION 10-5! Sarcomere shortening and muscle fiber stimulation produce tension! 2! 1 Tension Production - MUSCLE FIBER! All-or-none

More information

MUSCULAR TISSUE. Dr. Gary Mumaugh

MUSCULAR TISSUE. Dr. Gary Mumaugh MUSCULAR TISSUE Dr. Gary Mumaugh MUSCLE OVERVIEW The three types of muscle tissue are skeletal, cardiac, and smooth These types differ in structure, location, function, and means of activation FUNCTIONAL

More information

Fig Copyright McGraw-Hill Education. Permission required for reproduction or display. Nucleus. Muscle fiber. Endomysium. Striations.

Fig Copyright McGraw-Hill Education. Permission required for reproduction or display. Nucleus. Muscle fiber. Endomysium. Striations. Fig. 11.1 Nucleus Muscle fiber Endomysium Striations Ed Reschke 1 Fig. 11.2 Muscle fiber Nucleus I band A band Z disc Mitochondria Openings into transverse tubules Sarcoplasmic reticulum Triad: Terminal

More information

Chapter 10 Muscle Tissue and Physiology Chapter Outline

Chapter 10 Muscle Tissue and Physiology Chapter Outline Chapter 10 Muscle Tissue and Physiology Chapter Outline Module 10.1 Overview of muscle tissue (Figures 10.1 10.2) A. Types of Muscle Tissue (Figure 10.1) 1. The three types of cells in muscle tissue are,,

More information

Muscle Physiology. Dr. Ebneshahidi Ebneshahidi

Muscle Physiology. Dr. Ebneshahidi Ebneshahidi Muscle Physiology Dr. Ebneshahidi Skeletal Muscle Figure 9.2 (a) Functions of the muscular system 1. Locomotion body movements are due to skeletal muscle contraction. 2. Vasoconstriction and vasodilatation

More information

Chapter 8: Skeletal Muscle: Structure and Function

Chapter 8: Skeletal Muscle: Structure and Function Chapter 8: Skeletal Muscle: Structure and Function Objectives Draw & label the microstructure of skeletal muscle Outline the steps leading to muscle shortening Define the concentric and isometric Discuss:

More information

Muscle Histology. Dr. Heba Kalbouneh Assistant Professor of Anatomy and Histology

Muscle Histology. Dr. Heba Kalbouneh Assistant Professor of Anatomy and Histology Muscle Histology Dr. Heba Kalbouneh Assistant Professor of Anatomy and Histology Functions of muscle tissue Movement Maintenance of posture Joint stabilization Heat generation Types of Muscle Tissue Skeletal

More information

Chapter 10 -Muscle Tissue

Chapter 10 -Muscle Tissue Chapter 10 -Muscle Tissue Muscles: 1. Overview of Muscle Tissue A. Review 5 functions of muscle tissue. B. Review the 5 properties of muscle tissue. WHICH do they share with nervous tissue? (2, plus the

More information

Essentials of Human Anatomy & Physiology. The Muscular System

Essentials of Human Anatomy & Physiology. The Muscular System Essentials of Human Anatomy & Physiology The Muscular System The Muscular System Muscles are responsible for all types of body movement they contract or shorten and are the machine of the body Three basic

More information

Ch.10 Muscle Tissue. Copyright 2009, John Wiley & Sons, Inc.

Ch.10 Muscle Tissue. Copyright 2009, John Wiley & Sons, Inc. Ch.10 Muscle Tissue Preview Chapter 10 In groups we will define the following terms 1. Skeletal muscle 2. Smooth muscle 3. Cardiac muscle 4. Sarcomere 5. Myofibril 6. Myofilament 7. Sarcoplasmic reticulum

More information

BIOH111. o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system

BIOH111. o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system BIOH111 o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system Endeavour College of Natural Health endeavour.edu.au 1 TEXTBOOK AND REQUIRED/RECOMMENDED

More information

SKELETAL MUSCLE CHARACTERISTICS

SKELETAL MUSCLE CHARACTERISTICS THE MUSCULAR SYSTEM SKELETAL MUSCLE CHARACTERISTICS Most are attached by tendons to bones Cells are multinucleate Striated have visible banding Voluntary subject to conscious control Cells are surrounded

More information

2/19/2018. Learn and Understand:

2/19/2018. Learn and Understand: Muscular System with Special Emphasis on Skeletal Muscle Anatomy and Physiology Learn and Understand: The definition of cell changes again The contractile unit of muscle is the sarcomere. ATP and Ca 2+

More information

The All-or-None Principle Motor units also comply to a rule known as the all-ornone principle (or law).

The All-or-None Principle Motor units also comply to a rule known as the all-ornone principle (or law). The All-or-None Principle Motor units also comply to a rule known as the all-ornone principle (or law). This principle stipulates that, when a motor unit is stimulated to contract, it will do so to its

More information

Nerve Cell (aka neuron)

Nerve Cell (aka neuron) Nerve Cell (aka neuron) Neuromuscular Junction Nerve cell Muscle fiber (cell) The Nerve Stimulus and Action Potential The Nerve Stimulus and Action Potential Skeletal muscles must be stimulated by a motor

More information

CHAPTER 6 2/9/2016. Learning Objectives List the four traits that all muscle types have in common.

CHAPTER 6 2/9/2016. Learning Objectives List the four traits that all muscle types have in common. Learning Objectives List the four traits that all muscle types have in common. CHAPTER 6 The Muscular System Demonstrate and explain the use of antagonistic muscle pairs. Describe the attachment of muscle

More information

Session 3-Part 2: Skeletal Muscle

Session 3-Part 2: Skeletal Muscle Session 3-Part 2: Skeletal Muscle Course: Introduction to Exercise Science-Level 2 (Exercise Physiology) Presentation Created by Ken Baldwin, M.ED, ACSM-H/FI Copyright EFS Inc. All Rights Reserved. Skeletal

More information

MUSCULAR SYSTEM CHAPTER 09 BIO 211: ANATOMY & PHYSIOLOGY I

MUSCULAR SYSTEM CHAPTER 09 BIO 211: ANATOMY & PHYSIOLOGY I 1 BIO 211: ANATOMY & PHYSIOLOGY I 1 CHAPTER 09 MUSCULAR SYSTEM Part 2 of 2 Dr. Dr. Lawrence G. G. Altman www.lawrencegaltman.com Some illustrations are courtesy of McGraw-Hill. Some illustrations are courtesy

More information

Bio 103 Muscular System 61

Bio 103 Muscular System 61 61 Lecture Outline: MUSCULAR SYSTEM [Chapter 9] A. Functions of Skeletal Muscle 1. Movement 2. Maintain posture 3. Support 4. Guard openings 5. Maintain body temperature (thermogenesis) B. Muscle Tissue

More information

Outline. Bio 105: Muscular System. Muscular System. Types of Muscles. Smooth Muscle. Cardiac Muscle 4/6/2016

Outline. Bio 105: Muscular System. Muscular System. Types of Muscles. Smooth Muscle. Cardiac Muscle 4/6/2016 Outline Bio 105: Muscular System Lecture 11 Chapter 6 Characteristics of muscles 3 types of muscles Functions of muscles Structure of skeletal muscles Mechanics of muscle contraction Energy sources for

More information

Human Anatomy and Physiology - Problem Drill 09: The Muscular System

Human Anatomy and Physiology - Problem Drill 09: The Muscular System Human Anatomy and Physiology - Problem Drill 09: The Muscular System Question No. 1 of 10 The muscular system of the human body fulfills many different roles. Which of the following statements about the

More information

Skeletal Muscle and the Molecular Basis of Contraction. Lanny Shulman, O.D., Ph.D. University of Houston College of Optometry

Skeletal Muscle and the Molecular Basis of Contraction. Lanny Shulman, O.D., Ph.D. University of Houston College of Optometry Skeletal Muscle and the Molecular Basis of Contraction Lanny Shulman, O.D., Ph.D. University of Houston College of Optometry Like neurons, all muscle cells can be excited chemically, electrically, and

More information

Muscle Tissue. Alternating contraction and relaxation of cells. Chemical energy changed into mechanical energy

Muscle Tissue. Alternating contraction and relaxation of cells. Chemical energy changed into mechanical energy Know these muscles Muscle Tissue Alternating contraction and relaxation of cells Chemical energy changed into mechanical energy 3 Types of Muscle Tissue Skeletal muscle attaches to bone, skin or fascia

More information

Principles of Anatomy and Physiology

Principles of Anatomy and Physiology Principles of Anatomy and Physiology 14 th Edition CHAPTER 10 Muscular Tissue Introduction The purpose of the chapter is to: 1. Learn about the structure and function of the 3 types of muscular tissue

More information

I. Overview of Muscle Tissues

I. Overview of Muscle Tissues I. Overview of Muscle Tissues A. Types of Muscle Tissue 1. Terminology 1. Muscle fibers = muscle cells are greatly elongated therefore known as fibers; true for skeletal and smooth muscles only 2. Myo

More information

Chapter 10 Muscle Tissue

Chapter 10 Muscle Tissue Chapter 10 Muscle Tissue Skeletal muscle, cardiac muscle and smooth muscle. Differ in their microscopic anatomy, location and how they are controlled by the endocrine and nervous system. 3 Types of Muscle

More information

Anatomy & Physiology. Unit Two. Muscular System URLs Frog Dissection

Anatomy & Physiology. Unit Two. Muscular System URLs Frog Dissection Anatomy & Physiology 9 Muscular System URLs Frog Dissection http://curry.edschool.virginia.edu/go/frog/home.html Cat Dissection http://www.mhhe.com/biosci/ap/cat_dissect/index.htm List of Muscles http://www.meddean.luc.edu/lumen/meded/

More information

Muscle Tissue. Muscle Tissue Outline. General Function of Muscle Tissue

Muscle Tissue. Muscle Tissue Outline. General Function of Muscle Tissue Muscle Tissue Muscle Tissue Outline General Functions of Muscle Tissue Characteristics of Muscle Tissue Classification of Muscle Tissue Skeletal Muscle Structure and Function Muscle Energetics Muscle Mechanics

More information

#1 20. physiology. Muscle tissue 30/9/2015. Ahmad Adel Sallal. Mohammad Qudah

#1 20. physiology. Muscle tissue 30/9/2015. Ahmad Adel Sallal. Mohammad Qudah # 20 physiology Muscle tissue Ahmad Adel Sallal 30/9/205 Mohammad Qudah MUSCLES PHYSIOLOGY Awn, welcome to the first physiology lecture in the MSS, I wish you a perfect exams with high grades, and never

More information

Types of Muscle. Skeletal striated & voluntary Smooth involuntary Cardiac - heart

Types of Muscle. Skeletal striated & voluntary Smooth involuntary Cardiac - heart Muscular System Types of Muscle Skeletal striated & voluntary Smooth involuntary Cardiac - heart The word striated means striped. Skeletal muscle appears striped under a microscope. Muscles and Muscle

More information

Muscle Tissue. Alternating contraction and relaxation of cells Chemical energy changed into mechanical energy 10:32

Muscle Tissue. Alternating contraction and relaxation of cells Chemical energy changed into mechanical energy 10:32 Muscle Tissue Alternating contraction and relaxation of cells Chemical energy changed into mechanical energy 1 Properties of Muscle Tissue Excitability responds to chemical messengers (neurotransmitters)

More information

1. Locomotion. 2. Repositioning. 3. Internal movement

1. Locomotion. 2. Repositioning. 3. Internal movement MUSCLE and MOVEMENT Chapters 20, 8, 21 1. Locomotion A. Movement B. 2. Repositioning A. 3. Internal movement A. 1 Muscle Cells 1. Contractile 2. Myocytes 3. Striated A. Skeletal B. Cardiac 4. Smooth 5.

More information

1. Locomotion. 2. Repositioning. 3. Internal movement

1. Locomotion. 2. Repositioning. 3. Internal movement MUSCLE and MOVEMENT Chapters 20, 8, 21 1. Locomotion A. Movement B. 2. Repositioning A. 3. Internal movement A. Muscle Cells 1. Contractile 2. Myocytes 3. Striated A. Skeletal B. Cardiac 4. Smooth 5. Striated

More information

The Muscular System PART A

The Muscular System PART A 6 The Muscular System PART A PowerPoint Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY EIGHTH EDITION ELAINE N. MARIEB The Muscular System

More information

(c) sarcolemma with acethylcholine (protein) receptors

(c) sarcolemma with acethylcholine (protein) receptors (slide 1) Lecture Notes: Muscular System I. (slide 2) Introduction to Muscular System A) Tissues of the Muscular System: 1) Connective Tissues (a) dense fibrous (tendons and ligaments) 2) Nervous Tissue

More information

Muscles & Muscle Tissue

Muscles & Muscle Tissue Muscles & Muscle Tissue Chapter 6 I. Overview of Muscle 1 A. MUSCLE TYPES SKELETAL: striated, voluntary CARDIAC: only in heart involuntary striated SMOOTH: walls of organs involuntary nonstriated All Muscle

More information

PSK4U THE NEUROMUSCULAR SYSTEM

PSK4U THE NEUROMUSCULAR SYSTEM PSK4U THE NEUROMUSCULAR SYSTEM REVIEW Review of muscle so we can see how the neuromuscular system works This is not on today's note Skeletal Muscle Cell: Cellular System A) Excitation System Electrical

More information

How many skeletal muscles are present in our body? Muscles are excitable & contractile, extensible and elastic to some extent.

How many skeletal muscles are present in our body? Muscles are excitable & contractile, extensible and elastic to some extent. Muscles How many skeletal muscles are present in our body? -646 muscles The functions of the muscles are: Movement Maintenance of posture Generation of heat Stabilization of joints : amount of muscle surrounding

More information

BIOH111. o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system

BIOH111. o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system BIOH111 o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system Endeavour College of Natural Health endeavour.edu.au 1 Textbook and required/recommended

More information

Musculoskeletal Systems. Anatomy: Arrangement of Cells Physiology: Contractions

Musculoskeletal Systems. Anatomy: Arrangement of Cells Physiology: Contractions Musculoskeletal Systems Anatomy: Arrangement of Cells Physiology: Contractions Characteristics of all muscle Contractile: it shortens Excitable: receives & responds to electrical signals Extensible: stretches

More information

CLASS SET Unit 4: The Muscular System STUDY GUIDE

CLASS SET Unit 4: The Muscular System STUDY GUIDE NPHS Anatomy & Physiology Questions to answer: 1) List three functions of the muscular system. 1) movement 2) thermogenesis (generates heat) 3) posture & body/joint support CLASS SET Unit 4: The Muscular

More information

Ch 10: Skeletal Muscle Tissue (Myology)

Ch 10: Skeletal Muscle Tissue (Myology) Ch 10: Skeletal Muscle Tissue (Myology) main objectives: Describe the distinguishing characteristics of the different muscle tissues Discuss the organization of skeletal muscle Explain the micro-anatomy

More information

A and P CH 8 Lecture Notes.notebook. February 10, Table of Contents # Date Title Page # /30/17 Ch 8: Muscular System

A and P CH 8 Lecture Notes.notebook. February 10, Table of Contents # Date Title Page # /30/17 Ch 8: Muscular System Table of Contents # Date Title Page # 1. 01/30/17 Ch 8: Muscular System 2. 1 3. 4. 5. 6. 7. i 1 Turnitin.com Class #: 13551662 Password: GoViks 2 01/30/17 Ch 8: Muscular System Objective: Students will

More information

Muscular System. This chapter will focus on muscle cells and tissues. Muscle tissue has several functions:

Muscular System. This chapter will focus on muscle cells and tissues. Muscle tissue has several functions: Muscular System Slide 2 This chapter will focus on muscle cells and tissues. Muscle tissue has several functions: Movement: Muscles work as pulleys on bones to help create changes in body position. Muscles

More information

Ch 12: Muscles sarcolemma, t-tubules, sarcoplasmic reticulum, myofibrils, myofilaments, sarcomere...

Ch 12: Muscles sarcolemma, t-tubules, sarcoplasmic reticulum, myofibrils, myofilaments, sarcomere... Ch 12: Muscles Review micro-anatomy of muscle tissue Terminology examples: sarcolemma, t-tubules, sarcoplasmic reticulum, myofibrils, myofilaments, sarcomere... SLOs Differentiate levels of muscle structure:

More information

Muscle Tissue. General concepts. Classification of muscle. I. Functional classification is based on the type of neural control.

Muscle Tissue. General concepts. Classification of muscle. I. Functional classification is based on the type of neural control. Muscle Tissue LEARNING OBJECTIVES 1. Identify the three types of muscle tissue at the light microscopic level. 2. List and compare the structural and functional features of each of the three muscle fiber

More information

Muscle Cell Anatomy & Function (mainly striated muscle tissue)

Muscle Cell Anatomy & Function (mainly striated muscle tissue) Muscle Cell Anatomy & Function (mainly striated muscle tissue) General Structure of Muscle Cells (skeletal) several nuclei (skeletal muscle) skeletal muscles are formed when embryonic cells fuse together

More information

The Muscular System. Specialized tissue that enable the body and its parts to move.

The Muscular System. Specialized tissue that enable the body and its parts to move. The Muscular System Specialized tissue that enable the body and its parts to move. Anterior View Posterior View TRIVIA! How many muscles are there in the human body? Answer: 640 Muscles The muscles make

More information

Connective tissue MUSCLE TISSUE

Connective tissue MUSCLE TISSUE Connective tissue MUSCLE TISSUE Part 1 General features of MT Develop from mesoderm Many cells, less intercellular matrix Function contraction (shortening) Skeletal (striated, voluntary) Types of MT Cardiac

More information

Chapter 9 Muscle. Types of muscle Skeletal muscle Cardiac muscle Smooth muscle. Striated muscle

Chapter 9 Muscle. Types of muscle Skeletal muscle Cardiac muscle Smooth muscle. Striated muscle Chapter 9 Muscle Types of muscle Skeletal muscle Cardiac muscle Smooth muscle Striated muscle Chapter 9 Muscle (cont.) The sliding filament mechanism, in which myosin filaments bind to and move actin

More information

Muscle Physiology. Introduction. Four Characteristics of Muscle tissue. Skeletal Muscle

Muscle Physiology. Introduction. Four Characteristics of Muscle tissue. Skeletal Muscle Muscle Physiology Introduction Muscle = tissue capable of forceful shortening or contraction Converts chemical energy (ATP) into mechanical energy Important in: Respiration Urine collection & flow Gastrointestinal

More information

Anatomy & Physiology Muscular System Worksheet

Anatomy & Physiology Muscular System Worksheet Anatomy & Physiology Muscular System Worksheet 1. What are the three categories of muscle tissue? a) b) c) 2. The smallest functional unit of a muscle fiber is called a. 3. What are the four characteristics

More information

Muscular System. Honors Anatomy & Physiology. Susan Chabot Lemon Bay High School

Muscular System. Honors Anatomy & Physiology. Susan Chabot Lemon Bay High School Muscular System Honors Anatomy & Physiology Susan Chabot Lemon Bay High School Skeletal, Smooth, or Cardiac SKELETAL Striated Voluntary Multinucleated Bound to bones Moves skeleton SMOOTH Not striated

More information

Chapter 10: Muscles. Vocabulary: aponeurosis, fatigue

Chapter 10: Muscles. Vocabulary: aponeurosis, fatigue Chapter 10: Muscles 37. Describe the structural components of skeletal muscle tissue from the molecular to the organ level. 38. Describe the structure, function, and importance of sarcomeres. 39. Identify

More information

The Muscular System. Objective: The student will become familiar with the structure and function of the muscular system

The Muscular System. Objective: The student will become familiar with the structure and function of the muscular system The Muscular System Objective: The student will become familiar with the structure and function of the muscular system 1 Question of the day: What moves you? Composition: The musclar system makes up 40-50%

More information

Concept 50.5: The physical interaction of protein filaments is required for muscle function

Concept 50.5: The physical interaction of protein filaments is required for muscle function Concept 50.5: The physical interaction of protein filaments is required for muscle function Muscle activity is a response to input from the nervous system The action of a muscle is always to contract Vertebrate

More information

Muscles & Motor Locomotion Why Do We Need All That ATP?

Muscles & Motor Locomotion Why Do We Need All That ATP? Muscles & Motor Locomotion Why Do We Need All That ATP? 2006-2007 Animal Locomotion What are the advantages of locomotion? sessile motile Lots of ways to get around Lots of ways to get around mollusk mammal

More information

Properties of Muscle Tissue. Functions of Muscle Tissue. Connective Tissue Components SKELETAL MUSCLE TISSUE. Excitability

Properties of Muscle Tissue. Functions of Muscle Tissue. Connective Tissue Components SKELETAL MUSCLE TISSUE. Excitability 3 Types of Muscle Tissue Chapter 11 Muscle Tissue Skeletal muscle attaches to bone, skin or fascia striated with light & dark bands visible with scope voluntary control of contraction & relaxation 1 2

More information

Warm-Up. 2. What structure connects muscle to bone?

Warm-Up. 2. What structure connects muscle to bone? Warm-Up 1. Based on what you know about Latin root words, what do you think these terms refer to? Sarcomere Sarcoplasm Myofibril Epimysium Perimysium Endomysium 2. What structure connects muscle to bone?

More information

Skeletal Muscle. Smooth Muscle. Cardiac Muscle. I. 3 Types of Muscle Tissue. 1. Smooth 2. Cardiac 3. Skeletal

Skeletal Muscle. Smooth Muscle. Cardiac Muscle. I. 3 Types of Muscle Tissue. 1. Smooth 2. Cardiac 3. Skeletal I. 3 Types of Muscle Tissue 1. Smooth 2. Cardiac 3. Skeletal Smooth Muscle Found in body organs,vessels, respiratory passages Not striated, tapered, single cell nucleus involuntary, peristaltic contractions

More information

Muscle tissues. Dr. Hersh Abdul Ham-Karim BVM&S, PG Dip, MSc and PhD

Muscle tissues. Dr. Hersh Abdul Ham-Karim BVM&S, PG Dip, MSc and PhD Muscle tissues Dr. Hersh Abdul Ham-Karim BVM&S, PG Dip, MSc and PhD Muscle tissue is a soft tissue that composes muscles in animal bodies, and gives rise to muscles' ability to contract. Muscle tissue

More information

BCH 450 Biochemistry of Specialized Tissues. V. Muscle Tissues

BCH 450 Biochemistry of Specialized Tissues. V. Muscle Tissues BCH 450 Biochemistry of Specialized Tissues V. Muscle Tissues Nomenclature Sarcolemma = plasma membrane Sarcoplasmic reticulum = endoplasmic reticulum Muscle fiber = cell Myofibril = subcellular fibers

More information

AP Biology. Animal Locomotion. Muscles & Motor Locomotion. Why Do We Need All That ATP? Lots of ways to get around. Muscle

AP Biology. Animal Locomotion. Muscles & Motor Locomotion. Why Do We Need All That ATP? Lots of ways to get around. Muscle Muscles & Motor Locomotion Animal Locomotion What are the advantages of locomotion? sessile motile Why Do We Need All That? 2006-2007 Lots of ways to get around Lots of ways to get around mollusk mammal

More information

Muscle Tissue. Muscle Development and Repair. Development: fusion of myoblasts. Repair: Satellite cells (S) 3 Types of Muscle

Muscle Tissue. Muscle Development and Repair. Development: fusion of myoblasts. Repair: Satellite cells (S) 3 Types of Muscle ANNOUNCEMENTS Review Session Every Friday at 12:20 Muscle Tissue 3 Types of Muscle Function: Force generation Lab Practical Coming up! October 26 th, 27 th Muscle Tissue Striated Nonstriated Skeletal Smooth

More information

BIOLOGY - CLUTCH CH.49 - MUSCLE SYSTEMS.

BIOLOGY - CLUTCH CH.49 - MUSCLE SYSTEMS. !! www.clutchprep.com BIOLOGY - CLUTCH Muscle system organ system that includes skeletal, cardiac, and smooth muscle Muscle tissue capable of contracting through the interaction of actin and myosin proteins

More information

Medical Biology. Dr. Khalida Ibrahim

Medical Biology. Dr. Khalida Ibrahim Dr. Khalida Ibrahim Medical Biology MUSCLE TISSUE 1. Muscle tissue is characterized by its well-developed properties of contraction. 2. Muscle is responsible for the movements of the body and the various

More information

Organismic Biology Bio 207. Lecture 6. Muscle and movement; sliding filaments; E-C coupling; length-tension relationships; biomechanics. Prof.

Organismic Biology Bio 207. Lecture 6. Muscle and movement; sliding filaments; E-C coupling; length-tension relationships; biomechanics. Prof. Organismic Biology Bio 207 Lecture 6 Muscle and movement; sliding filaments; E-C coupling; length-tension relationships; biomechanics Prof. Simchon Today s Agenda Skeletal muscle Neuro Muscular Junction

More information

Muscular Tissue. Functions of Muscular Tissue. Types of Muscular Tissue. Skeletal Muscular Tissue. Properties of Muscular Tissue

Muscular Tissue. Functions of Muscular Tissue. Types of Muscular Tissue. Skeletal Muscular Tissue. Properties of Muscular Tissue Muscular Tissue Functions of Muscular Tissue Muscle makes up a large percentage of the body s weight (40-50%) Their main functions are to: Create motion muscles work with nerves, bones, and joints to produce

More information

10 - Muscular Contraction. Taft College Human Physiology

10 - Muscular Contraction. Taft College Human Physiology 10 - Muscular Contraction Taft College Human Physiology Muscular Contraction Sliding filament theory (Hanson and Huxley, 1954) These 2 investigators proposed that skeletal muscle shortens during contraction

More information

Warm Up! Test review (already! ;))

Warm Up! Test review (already! ;)) Warm Up! Test review (already! ;)) Write a question you might find on the Unit 5 test next week! (Multiple choice, matching, fill in, or short answer!) - challenge yourself and be ready to share!!! PowerPoint

More information

Skeletal Muscle Qiang XIA (

Skeletal Muscle Qiang XIA ( Skeletal Muscle Qiang XIA ( 夏强 ), PhD Department of Physiology Rm C518, Block C, Research Building, School of Medicine Tel: 88208252 Email: xiaqiang@zju.edu.cn Course website: http://10.71.121.151/physiology

More information

Muscular System- Part 1. Unit 5 Miss Wheeler

Muscular System- Part 1. Unit 5 Miss Wheeler Muscular System- Part 1 Unit 5 Miss Wheeler Fun Facts! The tongue is the strongest muscle in your body The smallest muscles in the body are in the middle ear The largest muscle in the body is the gluteus

More information

Types of Muscle. Skeletal striated & voluntary Smooth involuntary Cardiac - heart

Types of Muscle. Skeletal striated & voluntary Smooth involuntary Cardiac - heart Muscular System Types of Muscle Skeletal striated & voluntary Smooth involuntary Cardiac - heart The word striated means striped. Skeletal muscle appears striped under a microscope. Muscles and Muscle

More information