5-Nervous system II: Physiology of Neurons
|
|
- Eleanore Morton
- 5 years ago
- Views:
Transcription
1 5-Nervous system II: Physiology of Neurons AXON ION GRADIENTS ACTION POTENTIAL (axon conduction) GRADED POTENTIAL (cell-cell communication at synapse) SYNAPSE STRUCTURE & FUNCTION NEURAL INTEGRATION
2 CNS PNS CNS = brain + spinal cord; all parts of interneurons are in the CNS PNS: (1) afferent neurons (their activity affects what will happen next) into the CNS & (2) efferent neurons ( effecting change: movement, secretion, etc.) projecting out of the CNS. 2
3 Contrast autonomic and somatic components of the nervous system Voluntary Command: MOVE! Skeletal Muscle Contraction Involuntary Command: Rest/Digest Heart, smooth muscle, glands, etc. Involuntary Command FIGHT! FLIGHT! Heart, smooth muscle, glands, etc. 3
4 Schematic diagram of the mammalian autonomic nervous system 4
5 Another schematic diagram of the mammalian autonomic nervous system 5
6 6
7 Physiology of the nervous system 7
8 Physiology of the nervous system Only a very thin shell of charge difference is needed to establish a membrane potential. 8
9 Membrane Channels K+ ion Shut Open From Above 9
10 Membrane Channels Change conformation in response to voltage change in the surrounding membrane: voltage gated Change conformation in response to binding by an ion or other compound: ligand gated Are selective in which ions pass through the pore in the center Amino acid charges around the pore can attract specific ions May have 3 states: deactivated (closed), activated (open), inactivated (closed) 10
11 Sodium Potassium Pump (Na+/K+-ATPase) 3 Sodium ions moved out 2 Potassium ions moved in Uses ATP to power protein conformational change 11
12 Graded potentials can be excitatory (an action potential is more likely to occur), or inhibitory where an action potential is less likely. The size of a graded potential is proportional to the size of the stimulus. Graded potentials decay as they move over distance. Membrane Potential (mv) 12
13 Action potentials ~100mV An action potential is an all-or-none sequence of changes in membrane potential (and an example of positive feedback). Action potentials result from an all-or-none sequence of changes in ion permeability due to the operation of voltage-gated Na+ and K + channels. The rapid opening of voltage-gated Na+ channels allows rapid entry of Na+ The slower opening of voltage-gated K+ channels allows K + exit 13
14 Action potentials mediated by voltage gated channels in the axon membrane 14
15 Action potentials Four action potentials, each the result of a stimulus strong enough to cause depolarization, are shown. Note that all are the same height. 15
16 Action potential propagation down the axon The propagation of the action potential from the dendrites to the axon-terminal end is typically one-way because the absolute refractory period follows along in the wake of the moving action potential; the AP starts at the neuron initial segment. 16
17 Remember the synapse when the action potential arrives at the axon terminals The synapse is the point of communication between two neurons. Chemical synapses have a synaptic cleft (about nm wide) and neurotransmitter diffuses across the cleft to bind to receptors on the postsynaptic neuron membrane. Ca++ Chemical synapses are one-directional. 17
18 18
19 Excitatory vs Inhibitory Influences: Neural Integration But also Ach, serotonin and others EPSP: excitatory postsynaptic potential IPSP: inhibitory postsynaptic potential
20 1.EPSP: excitatory postsynaptic potential Key point: An action potential in a presynaptic neuron results in a graded potential in the postsynaptic neuron. 2. IPSP: inhibitory postsynaptic potential (GABA and glycine are the main neurotransmitters) 20
21 NOTE: 1. The role of voltage-gated calcium channels 2. Vesicles with neurotransmitter 3.Neurotransmitter binding to postsynaptic receptors (often ligand-gated ion channels) 4.Re-uptake and enzymatic breakdown of neurotransmitter 5. At an excitatory synapse non-selective ion channels open and ions, mostly Na+ move down the gradient 6. At an inhibitory synapse Cl- channels open 21
22 Neural integration Real neurons receive as many as 200,000 synapses each Ion flows from all inputs summate or average at the initial segment An action potential in the postsynaptic neuron occurs if the membrane potential at the initial segment reaches threshold 22
Outline. Neuron Structure. Week 4 - Nervous System. The Nervous System: Neurons and Synapses
Outline Week 4 - The Nervous System: Neurons and Synapses Neurons Neuron structures Types of neurons Electrical activity of neurons Depolarization, repolarization, hyperpolarization Synapses Release of
More informationThe Nervous System. Nervous System Functions 1. gather sensory input 2. integration- process and interpret sensory input 3. cause motor output
The Nervous System Nervous System Functions 1. gather sensory input 2. integration- process and interpret sensory input 3. cause motor output The Nervous System 2 Parts of the Nervous System 1. central
More informationNeurons, Synapses and Signaling. Chapter 48
Neurons, Synapses and Signaling Chapter 48 Warm Up Exercise What types of cells can receive a nerve signal? Nervous Organization Neurons- nerve cells. Brain- organized into clusters of neurons, called
More informationIntroduction to Neurobiology
Biology 240 General Zoology Introduction to Neurobiology Nervous System functions: communication of information via nerve signals integration and processing of information control of physiological and
More informationEndocrine System Nervous System
Cells Endocrine System Nervous System Tissues Controls Organs Nervous System vs Endocrine System Electrical signals (graded potentials and action potentials) and chemical signals (neurotransmitters) Fast
More informationChapter 11: Nervous System and Nervous Tissue
Chapter 11: Nervous System and Nervous Tissue I. Functions and divisions of the nervous system A. Sensory input: monitor changes in internal and external environment B. Integrations: make decisions about
More informationChapter 4 Neuronal Physiology
Chapter 4 Neuronal Physiology V edit. Pg. 99-131 VI edit. Pg. 85-113 VII edit. Pg. 87-113 Input Zone Dendrites and Cell body Nucleus Trigger Zone Axon hillock Conducting Zone Axon (may be from 1mm to more
More informationNervous System. 2. Receives information from the environment from CNS to organs and glands. 1. Relays messages, processes info, analyzes data
Nervous System 1. Relays messages, processes info, analyzes data 2. Receives information from the environment from CNS to organs and glands 3. Transmits impulses from CNS to muscles and glands 4. Transmits
More informationFunction of the Nervous System
Nervous System Function of the Nervous System Receive sensory information, interpret it, and send out appropriate commands to form a response Composed of neurons (functional unit of the nervous system)
More informationNervous Tissue and Neurophysiology
Nervous Tissue and Neurophysiology Objectives Describe the two major divisions of the nervous system and their characteristics. Identify the structures/functions of a typical neuron. Describe the location
More informationChapter 11 Introduction to the Nervous System and Nervous Tissue Chapter Outline
Chapter 11 Introduction to the Nervous System and Nervous Tissue Chapter Outline Module 11.1 Overview of the Nervous System (Figures 11.1-11.3) A. The nervous system controls our perception and experience
More informationChapter 11: Functional Organization of Nervous Tissue
Chapter 11: Functional Organization of Nervous Tissue I. Functions of the Nervous System A. List and describe the five major nervous system functions: 1. 2. 3. 4. 5. II. Divisions of the Nervous System
More informationNervous System. Master controlling and communicating system of the body. Secrete chemicals called neurotransmitters
Nervous System Master controlling and communicating system of the body Interacts with the endocrine system to control and coordinate the body s responses to changes in its environment, as well as growth,
More informationFunctions of Nervous System Neuron Structure
Chapter 10 Nervous System I Divisions of the Nervous System Cell Types of Neural Tissue neurons neuroglial cells Central Nervous System brain spinal cord Peripheral Nervous System nerves cranial nerves
More informationSTRUCTURAL ELEMENTS OF THE NERVOUS SYSTEM
STRUCTURAL ELEMENTS OF THE NERVOUS SYSTEM STRUCTURE AND MAINTENANCE OF NEURONS (a) (b) Dendrites Cell body Initial segment collateral terminals (a) Diagrammatic representation of a neuron. The break in
More informationCHAPTER 44: Neurons and Nervous Systems
CHAPTER 44: Neurons and Nervous Systems 1. What are the three different types of neurons and what are their functions? a. b. c. 2. Label and list the function of each part of the neuron. 3. How does the
More informationEndocrine System Nervous System
Cells Endocrine System Nervous System Tissues Controls Organs Nervous System vs Endocrine System Electrical signals (graded potentials and action potentials) and chemical signals (neurotransmitters) Fast
More informationNeurons, Synapses, and Signaling
Neurons, Synapses, and Signaling The Neuron is the functional unit of the nervous system. Neurons are composed of a cell body, which contains the nucleus and organelles; Dendrites which are extensions
More informationChapter 7 Nerve Cells and Electrical Signaling
Chapter 7 Nerve Cells and Electrical Signaling 7.1. Overview of the Nervous System (Figure 7.1) 7.2. Cells of the Nervous System o Neurons are excitable cells which can generate action potentials o 90%
More informationChapter 7. Objectives
Chapter 7 The Nervous System: Structure and Control of Movement Objectives Discuss the general organization of the nervous system Describe the structure & function of a nerve Draw and label the pathways
More informationThursday, January 22, Nerve impulse
Nerve impulse Transmembrane Potential caused by ions moving through cell membrane at different rates Two main ions of concern Na + - Sodium K + - potassium Cell membrane not freely permeable therefore
More informationChapter 7. The Nervous System: Structure and Control of Movement
Chapter 7 The Nervous System: Structure and Control of Movement Objectives Discuss the general organization of the nervous system Describe the structure & function of a nerve Draw and label the pathways
More informationStudy Guide Answer Key Nervous System
Biology 12 Human Biology Textbook: BC Biology 12 Study Guide Answer Key Nervous System 1. Draw a neuron, label 3 parts and give the function of those parts. Dendrite: carry signals to the cell body Cell
More informationTHE NERVOUS SYSTEM. Homeostasis Strand
THE NERVOUS SYSTEM Homeostasis Strand Introduction In general, a nervous system has three overlapping functions : 1. Sensory input conduction of signals from sensory receptors to integration centres 2.
More informationBIOLOGY 2050 LECTURE NOTES ANATOMY & PHYSIOLOGY I (A. IMHOLTZ) FUNDAMENTALS OF THE NERVOUS SYSTEM AND NERVOUS TISSUE P1 OF 5
P1 OF 5 The nervous system controls/coordinates the activities of cells, tissues, & organs. The endocrine system also plays a role in control/coordination. The nervous system is more dominant. Its mechanisms
More informationAP Biology Unit 6. The Nervous System
AP Biology Unit 6 The Nervous System Branches of the Nervous System There are 2 main branches of the nervous system Central Nervous System Brain Spinal Cord Peripheral Nervous System All nerves leading
More informationNEURONS COMMUNICATE WITH OTHER CELLS AT SYNAPSES 34.3
NEURONS COMMUNICATE WITH OTHER CELLS AT SYNAPSES 34.3 NEURONS COMMUNICATE WITH OTHER CELLS AT SYNAPSES Neurons communicate with other neurons or target cells at synapses. Chemical synapse: a very narrow
More informationAction potential. Definition: an all-or-none change in voltage that propagates itself down the axon
Action potential Definition: an all-or-none change in voltage that propagates itself down the axon Action potential Definition: an all-or-none change in voltage that propagates itself down the axon Naturally
More informationPortions from Chapter 6 CHAPTER 7. The Nervous System: Neurons and Synapses. Chapter 7 Outline. and Supporting Cells
CHAPTER 7 The Nervous System: Neurons and Synapses Chapter 7 Outline Neurons and Supporting Cells Activity in Axons The Synapse Acetylcholine as a Neurotransmitter Monoamines as Neurotransmitters Other
More informationChapter 12 Nervous Tissue. Copyright 2009 John Wiley & Sons, Inc. 1
Chapter 12 Nervous Tissue Copyright 2009 John Wiley & Sons, Inc. 1 Terms to Know CNS PNS Afferent division Efferent division Somatic nervous system Autonomic nervous system Sympathetic nervous system Parasympathetic
More informationNeurons Chapter 7 2/19/2016. Learning Objectives. Cells of the Nervous System. Cells of the Nervous System. Cells of the Nervous System
Learning Objectives Neurons Chapter 7 Identify and describe the functions of the two main divisions of the nervous system. Differentiate between a neuron and neuroglial cells in terms of structure and
More informationNa + K + pump. The beauty of the Na + K + pump. Cotransport. The setup Cotransport the result. Found along the plasma membrane of all cells.
The beauty of the Na + K + pump Na + K + pump Found along the plasma membrane of all cells. Establishes gradients, controls osmotic effects, allows for cotransport Nerve cells have a Na + K + pump and
More informationQUIZ YOURSELF COLOSSAL NEURON ACTIVITY
QUIZ YOURSELF What are the factors that produce the resting potential? How is an action potential initiated and what is the subsequent flow of ions during the action potential? 1 COLOSSAL NEURON ACTIVITY
More information3) Most of the organelles in a neuron are located in the A) dendritic region. B) axon hillock. C) axon. D) cell body. E) axon terminals.
Chapter 48 Neurons, Synapses, and Signaling Multiple-Choice Questions 1) A simple nervous system A) must include chemical senses, mechanoreception, and vision. B) includes a minimum of 12 ganglia. C) has
More informationBranches of the Nervous System
The Nervous System Branches of the Nervous System There are 2 main branches of the nervous system Central Nervous System Brain Spinal Cord Peripheral Nervous System All nerves leading to rest of body Anatomy
More informationANATOMY AND PHYSIOLOGY OF NEURONS. AP Biology Chapter 48
ANATOMY AND PHYSIOLOGY OF NEURONS AP Biology Chapter 48 Objectives Describe the different types of neurons Describe the structure and function of dendrites, axons, a synapse, types of ion channels, and
More informationAll questions below pertain to mandatory material: all slides, and mandatory homework (if any).
ECOL 182 Spring 2008 Dr. Ferriere s lectures Lecture 6: Nervous system and brain Quiz Book reference: LIFE-The Science of Biology, 8 th Edition. http://bcs.whfreeman.com/thelifewire8e/ All questions below
More informationHole s Human Anatomy and Physiology Eleventh Edition. Chapter 10
PowerPoint Lecture Outlines to accompany Hole s Human Anatomy and Physiology Eleventh Edition Shier Butler Lewis Chapter 10 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction
More informationD) around, bypassing B) toward
Nervous System Practice Questions 1. Which of the following are the parts of neurons? A) brain, spinal cord, and vertebral column B) dendrite, axon, and cell body C) sensory and motor D) cortex, medulla
More informationPSY 215 Lecture 3 (1/19/2011) (Synapses & Neurotransmitters) Dr. Achtman PSY 215
Corrections: None needed. PSY 215 Lecture 3 Topic: Synapses & Neurotransmitters Chapters 2 & 3, pages 40-57 Lecture Notes: SYNAPSES & NEUROTRANSMITTERS, CHAPTER 3 Action Potential (above diagram found
More informationAnatomy Review. Graphics are used with permission of: Pearson Education Inc., publishing as Benjamin Cummings (
Anatomy Review Graphics are used with permission of: Pearson Education Inc., publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction Neurons communicate with other cells at junctions
More informationNEUROCHEMISTRY Brief Review
NEUROCHEMISTRY Brief Review UNIVERSITY OF PNG SCHOOL OF MEDICINE AND HEALTH SCIENCES DISCIPLINE OF BIOCHEMISTRY AND MOLECULAR BIOLOGY PBL MBBS YEAR V SEMINAR VJ Temple 1 Membrane potential Membrane potential:
More informationLESSON 3.3 WORKBOOK. Why does applying pressure relieve pain?
Postsynaptic potentials small changes in voltage (membrane potential) due to the binding of neurotransmitter. Receptor-gated ion channels ion channels that open or close in response to the binding of a
More informationLESSON 3.3 WORKBOOK. Why does applying pressure relieve pain? Workbook. Postsynaptic potentials
Depolarize to decrease the resting membrane potential. Decreasing membrane potential means that the membrane potential is becoming more positive. Excitatory postsynaptic potentials (EPSP) graded postsynaptic
More informationWhat is Anatomy and Physiology?
Introduction BI 212 BI 213 BI 211 Ecosystems Organs / organ systems Cells Organelles Communities Tissues Molecules Populations Organisms Campbell et al. Figure 1.4 Introduction What is Anatomy and Physiology?
More information10.1: Introduction. Cell types in neural tissue: Neurons Neuroglial cells (also known as neuroglia, glia, and glial cells) Dendrites.
10.1: Introduction Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Cell types in neural tissue: Neurons Neuroglial cells (also known as neuroglia, glia, and glial
More informationMOLECULAR AND CELLULAR NEUROSCIENCE
MOLECULAR AND CELLULAR NEUROSCIENCE BMP-218 November 4, 2014 DIVISIONS OF THE NERVOUS SYSTEM The nervous system is composed of two primary divisions: 1. CNS - Central Nervous System (Brain + Spinal Cord)
More informationNervous System Dr. Naim Kittana Department of Biomedical Sciences Faculty of Medicine & Health Sciences An-Najah National University
Nervous System Department of Biomedical Sciences Faculty of Medicine & Health Sciences An-Najah National University Declaration The content and the figures of this seminar were directly adopted from the
More informationLecture 22: A little Neurobiology
BIO 5099: Molecular Biology for Computer Scientists (et al) Lecture 22: A little Neurobiology http://compbio.uchsc.edu/hunter/bio5099 Larry.Hunter@uchsc.edu Nervous system development Part of the ectoderm
More informationNeural Tissue. Chapter 12 Part B
Neural Tissue Chapter 12 Part B CNS Tumors - Neurons stop dividing at age 4 but glial cells retain the capacity to divide. - Primary CNS tumors in adults- division of abnormal neuroglia rather than from
More information2/27/2019. Functions of the Nervous System. Nervous Tissue and Neuron Function. Fundamentals Of The Nervous System And Nervous Tissue
Nervous Tissue and Neuron Function Fundamentals Of The Nervous System And Nervous Tissue Learn and Understand 1. Like muscle cells, neurons use membrane polarity upset (AP) as a signal therefore keeping
More informationChapter 17 Nervous System
Chapter 17 Nervous System 1 The Nervous System Two Anatomical Divisions Central Nervous System (CNS) Brain and Spinal Cord Peripheral Nervous System (PNS) Two Types of Cells Neurons Transmit nerve impulses
More informationNEURAL TISSUE (NEUROPHYSIOLOGY) PART I (A): NEURONS & NEUROGLIA
PART I (A): NEURONS & NEUROGLIA Neural Tissue Contains 2 kinds of cells: neurons: cells that send and receive signals neuroglia (glial cells): cells that support and protect neurons Neuron Types Sensory
More informationConcept 48.1 Neuron organization and structure reflect function in information transfer
Name Chapter 48: Neurons, Synapses, and Signaling Period Chapter 48: Neurons, Synapses, and Signaling Concept 48.1 Neuron organization and structure reflect function in information transfer 1. What is
More informationHuman Anatomy & Physiology
PowerPoint Lecture Slides prepared by Barbara Heard, Atlantic Cape Community College Ninth Edition Human Anatomy & Physiology C H A P T E R 11 Annie Leibovitz/Contact Press Images 2013 Pearson Education,
More informationCommunication within a Neuron
Neuronal Communication, Ph.D. Communication within a Neuron Measuring Electrical Potentials of Axons The Membrane Potential The Action Potential Conduction of the Action Potential 1 The withdrawal reflex
More information9/28/2016. Neuron. Multipolar Neuron. Astrocytes Exchange Materials With Neurons. Glia or Glial Cells ( supporting cells of the nervous system)
Neuron Multipolar Neuron https://www.youtube.com/watch?v=lw-psbnu5xago to :38 Glia or Glial Cells ( supporting cells of the nervous system) 10X more numerous than neurons but one-tenth the size make up
More informationOutline. Animals: Nervous system. Neuron and connection of neurons. Key Concepts:
Animals: Nervous system Neuron and connection of neurons Outline 1. Key concepts 2. An Overview and Evolution 3. Human Nervous System 4. The Neurons 5. The Electrical Signals 6. Communication between Neurons
More informationChapter 2 The Brain or Bio Psychology
Chapter 2 The Brain or Bio Psychology 1 2 3 1 Glial Cells Surround neurons and hold them in place Make Myelin (covering for neurons) Manufacture nutrient chemicals neurons need Absorb toxins and waste
More informationLearning expectations for BIOL 131. Chapters 11, Nervous System Overview Read Chapter 11. You should be able to:
NOTE The quiz will have question ONLY from the material we get through on Tuesday. The first midterm will cover all material from day one until the lecture before the second midterm. Learning expectations
More informationHuman Brain and Senses
Human Brain and Senses Outline for today Levels of analysis Basic structure of neurons How neurons communicate Basic structure of the nervous system Levels of analysis Organism Brain Cell Synapses Membrane
More informationThe Nervous System -The master controlling and communicating system of the body
The Nervous System -The master controlling and communicating system of the body Functions: -Sensory input -Integration -Motor output Organization of the Nervous System Central nervous system (CNS) -Brain
More informationThe Nervous System AP Biology
The Nervous System 2005-2006 Neuron (nerve cell) signal direction dendrites cell body Structure fits function, it have many entry points for signal one path out transmits signal Nodes of Ranvier axon signal
More informationEE 791 Lecture 2 Jan 19, 2015
EE 791 Lecture 2 Jan 19, 2015 Action Potential Conduction And Neural Organization EE 791-Lecture 2 1 Core-conductor model: In the core-conductor model we approximate an axon or a segment of a dendrite
More informationNeurons: Structure and communication
Neurons: Structure and communication http://faculty.washington.edu/chudler/gall1.html Common Components of a Neuron Dendrites Input, receives neurotransmitters Soma Processing, decision Axon Transmits
More informationBIOL Week 6. Nervous System. Transmission at Synapses
Collin County Community College BIOL 2401 Week 6 Nervous System 1 Transmission at Synapses Synapses are the site of communication between 2 or more neurons. It mediates the transfer of information and
More informationChapter 12 Nervous Tissue. Copyright 2009 John Wiley & Sons, Inc. 1
Chapter 12 Nervous Tissue Copyright 2009 John Wiley & Sons, Inc. 1 Overview of the Nervous System The nervous system, along with the endocrine system, helps to keep controlled conditions within limits
More informationNeurophysiology scripts. Slide 2
Neurophysiology scripts Slide 2 Nervous system and Endocrine system both maintain homeostasis in the body. Nervous system by nerve impulse and Endocrine system by hormones. Since the nerve impulse is an
More informationBiol 219 Lec 12 Fall 2016
Cell-to-Cell: Neurons Communicate at Synapses Electrical synapses pass electrical signals through gap junctions Signal can be bi-directional Synchronizes the activity of a network of cells Primarily in
More informationApplied Neuroscience. Conclusion of Science Honors Program Spring 2017
Applied Neuroscience Conclusion of Science Honors Program Spring 2017 Review Circle whichever is greater, A or B. If A = B, circle both: I. A. permeability of a neuronal membrane to Na + during the rise
More informationBIOLOGY 12 NERVOUS SYSTEM PRACTICE
1 Name: BIOLOGY 12 NERVOUS SYSTEM PRACTICE Date: 1) Identify structures X, Y and Z and give one function of each. 2) Which processes are involved in the movement of molecule Y from point X to point Z?
More informationHole s Human Anatomy and Physiology Tenth Edition. Chapter 10
PowerPoint Lecture Outlines to accompany Hole s Human Anatomy and Physiology Tenth Edition Shier Butler Lewis Chapter 10 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or
More informationAmeen Alsaras. Ameen Alsaras. Mohd.Khatatbeh
9 Ameen Alsaras Ameen Alsaras Mohd.Khatatbeh Nerve Cells (Neurons) *Remember: The neural cell consists of: 1-Cell body 2-Dendrites 3-Axon which ends as axon terminals. The conduction of impulse through
More informationMajor Structures of the Nervous System. Brain, cranial nerves, spinal cord, spinal nerves, ganglia, enteric plexuses and sensory receptors
Major Structures of the Nervous System Brain, cranial nerves, spinal cord, spinal nerves, ganglia, enteric plexuses and sensory receptors Nervous System Divisions Central Nervous System (CNS) consists
More informationAnimal Physiology Study Guide
Animal Physiology Study Guide 1. Which of the following are an example of passive transport? 2. Which active transport? 3. How can you tell? 1. Which of the following are an example of passive transport?
More informationNeural Communication. Central Nervous System Peripheral Nervous System. Communication in the Nervous System. 4 Common Components of a Neuron
Neural Communication Overview of CNS / PNS Electrical Signaling Chemical Signaling Central Nervous System Peripheral Nervous System Somatic = sensory & motor Autonomic = arousal state Parasympathetic =
More informationIntroduction to Physiological Psychology
Introduction to Physiological Psychology Review Kim Sweeney ksweeney@cogsci.ucsd.edu www.cogsci.ucsd.edu/~ksweeney/psy260.html Today n Discuss Final Paper Proposal (due 3/10) n General Review 1 The article
More informationNeurons, Synapses, and Signaling
Chapter 48 Neurons, Synapses, and Signaling PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions
More informationAxon Nerve impulse. Axoplasm Receptor. Axomembrane Stimuli. Schwann cell Effector. Myelin Cell body
Nervous System Review 1. Explain a reflex arc. 2. Know the structure, function and location of a sensory neuron, interneuron, and motor neuron 3. What is (a) Neuron Axon Nerve impulse Axoplasm Receptor
More informationBIPN100 F15 Human Physiology 1 Lecture 3. Synaptic Transmission p. 1
BIPN100 F15 Human Physiology 1 Lecture 3. Synaptic Transmission p. 1 Terms you should know: synapse, neuromuscular junction (NMJ), pre-synaptic, post-synaptic, synaptic cleft, acetylcholine (ACh), acetylcholine
More informationBENG 260 Supplementary neurophysiology slides
BENG 260 Supplementary neurophysiology slides Fall 2013 Slides are taken from Vander s Human Physiology, 11 th edition, McGraw Hill (ISBN 0077216091)" These slides cover:" Chapter 6, Neuronal Signaling
More informationMeyers' A&P February 15, Unit 7. The Nervous System. I. Functions of the Nervous System. Monitors body's internal and external enviornments
Unit 7 The Nervous System I. Functions of the Nervous System Monitors body's internal and external enviornments Integrates sensory information Coordinates voluntary & involuntary responses of many other
More informationFLASH CARDS. Kalat s Book Chapter 2 Alphabetical
FLASH CARDS www.biologicalpsych.com Kalat s Book Chapter 2 Alphabetical absolute refractory period absolute refractory period Time when neuron will not re-fire no matter how much stimulus it gets. action
More informationChapter 45: Synapses Transmission of Nerve Impulses Between Neurons. Chad Smurthwaite & Jordan Shellmire
Chapter 45: Synapses Transmission of Nerve Impulses Between Neurons Chad Smurthwaite & Jordan Shellmire The Chemical Synapse The most common type of synapse used for signal transmission in the central
More informationChapter 17. Nervous System Nervous systems receive sensory input, interpret it, and send out appropriate commands. !
Chapter 17 Sensory receptor Sensory input Integration Nervous System Motor output Brain and spinal cord Effector cells Peripheral nervous system (PNS) Central nervous system (CNS) 28.1 Nervous systems
More informationBIOLOGICAL PROCESSES
BIOLOGICAL PROCESSES CHAPTER 3 1 LEARNING GOALS Discuss how the nervous system communicates internally. Describe the structure and function of neurons Describe how the neuron transmits information Describe
More informationPARTS central nervous system brain and spinal cord nerve bundle of neurons wrapped in connective tissue
NEUROPHYSIOLOGY Electrical Properties of Nerve cells (neurons) Electro physiology of neurons lie in Membrane Physiology Model organisms is Squid Giant Axon (SGA) diversity of Nervous systems NERVOUS SYSTEM
More informationCh. 45 Continues (Have You Read Ch. 45 yet?) u Central Nervous System Synapses - Synaptic functions of neurons - Information transmission via nerve
Ch. 45 Continues (Have You Read Ch. 45 yet?) u Central Nervous System Synapses - Synaptic functions of neurons - Information transmission via nerve impulses - Impulse may be blocked in its transmission
More informationElectrophysiology. General Neurophysiology. Action Potentials
5 Electrophysiology Cochlear implants should aim to reproduce the coding of sound in the auditory system as closely as possible, for best sound perception. The cochlear implant is in part the result of
More informationThe Nervous System 12/11/2015
The Nervous System Biology 12 Unit 3: Homeostasis December 11, 2015 The nervous system is an elaborate communication system that contains more than 100 billion nerve cells in the brain alone There are
More informationBiology 201-Worksheet on Nervous System (Answers are in your power point outlines-there is no key!)
Bio 201 Tissues and Skin 1 March 21, 2011 Biology 201-Worksheet on Nervous System (Answers are in your power point outlines-there is no key!) 1. The study of the normal functioning and disorders of the
More information6.5 Nerves, Hormones and Homeostasis
6.5 Nerves, Hormones and Homeostasis IB Biology SL Part 1 - Nerves Outcomes Part 1 6.5.1State that the nervous system consists of the central nervous system (CNS) and peripheral nerves, and is composed
More informationSynaptic Communication. Steven McLoon Department of Neuroscience University of Minnesota
Synaptic Communication Steven McLoon Department of Neuroscience University of Minnesota 1 Course News The first exam is next week on Friday! Be sure to checkout the sample exam on the course website. 2
More informationNervous System Notes
Nervous System Notes The nervous system consists of a network of nerve cells or neurons. I. A nervous system is an important part of a cell s (or an organism s) ability to respond to the environment. A.
More informationChapter 2. The Cellular and Molecular Basis of Cognition Cognitive Neuroscience: The Biology of the Mind, 2 nd Ed.,
Chapter 2. The Cellular and Molecular Basis of Cognition Cognitive Neuroscience: The Biology of the Mind, 2 nd Ed., M. S. Gazzaniga, R. B. Ivry, and G. R. Mangun, Norton, 2002. Summarized by B.-W. Ku,
More informationNotes are online at The Neuron
Notes are online at http://cogsci.ucsd.edu/~clovett/neuronotescogs17.pdf A. What is a neuron? The Neuron 1. A neuron is a type of cell that receives and transmits information in the Central Nervous System
More informationH. An electrical signal travel down the dendrite.
Nervous System Group Activity Objectives: To be able to describe the nervous system structure and function To understand how neurons communicate using both electrical and chemical signals To know how the
More informationYou can follow the path of the neural signal. The sensory neurons detect a stimulus in your finger and send that information to the CNS.
1 Nervous system maintains coordination through the use of electrical and chemical processes. There are three aspects: sensory, motor, and integrative, which we will discuss throughout the system. The
More information1) Drop off in the Bi 150 box outside Baxter 331 or to the head TA (jcolas).
Bi/CNS/NB 150 Problem Set 3 Due: Tuesday, Oct. 27, at 4:30 pm Instructions: 1) Drop off in the Bi 150 box outside Baxter 331 or e-mail to the head TA (jcolas). 2) Submit with this cover page. 3) Use a
More informationOmar Sami. Muhammad Abid. Muhammad khatatbeh
10 Omar Sami Muhammad Abid Muhammad khatatbeh Let s shock the world In this lecture we are going to cover topics said in previous lectures and then start with the nerve cells (neurons) and the synapses
More information