BIOLOGY. CONCEPTS & CONNECTIONS Fourth Edition. Neil A. Campbell Jane B. Reece Lawrence G. Mitchell Martha R. Taylor
|
|
- Gwenda Page
- 5 years ago
- Views:
Transcription
1 BIOLOGY CONCEPTS & CONNECTIONS Fourth Edition Neil A. Campbell Jane B. Reece Lawrence G. Mitchell Martha R. Taylor CHAPTER 25 Control of the Internal Environment Modules From PowerPoint Lectures for Biology: Concepts & Connections
2 Let Sleeping Bears Lie Bears don t technically hibernate They do enter a dormant state, when their body temperature drops by several degrees Bears are endotherms ( warm blooded ) Endothermic animals derive most of their body heat from metabolism (cellular respiration) Ectothermic animals warm themselves mainly by absorbing heat from their surroundings ( cold blooded )
3 Dormant bears have internal homeostatic mechanisms that compensate for fluctuations in the external environment Thermoregulation maintains the body temperature within a tolerable range Osmoregulation controls the gain and loss of water and dissolved solutes Excretion is the disposal of metabolic wastes
4 THERMOREGULATION Heat is gained or lost in four ways Body temperature regulation requires adjustment to heat gained from or lost to an animal s environment Too cold go somewhere to absorb heat energy Too hot go in shade, water or open mouth Convection Radiation Evaporation Conduction Figure 25.1
5 Lizard on rock Figure 25.1x
6 Harbor seal Figure 25.2x2
7 Fox in snow Figure 25.2x1
8 Thermoregulation depends on both heat production and heat gain or lost Both endotherms and ectotherms may change their rate of heat loss Endotherms may sleep, shed winter/spring coat/fur, feathers, put on extra insulation (fat) Humans may lose heat by sweating/perspiring (evaporative cooling)
9 Hormonal changes may increase heat production by raising the metabolic rate Fur and feathers help the body retain heat Shivering, as these honeybees are doing, also increases metabolic heat production Figure 25.2A
10 Blood flow to the skin affects heat loss, send warm blood to the skin, promotes heat loss with the environment To conserve heat move blood away from skin, constrict blood vessels Top view of shark Blood vessels of gills Skin Artery Vein Heart Capillary network within muscle Artery and vein under the skin Dorsal aorta Figure 25.2B
11 In a countercurrent heat exchanger, blood from the core body warms cooler blood returning from the gills or limbs Body surface (cool) 18 C 20 C Fish move blood and water in opposite directions across their gills. Blood flow This process conserves body heat Heat transfer Inner body (warm) Figure 25.2C
12 Behavior often affects body temperature Basking in the sun Sitting in the shade Bathing Burrowing or huddling Migrating Figure 25.3
13 Reducing the metabolic rate saves energy Torpor is a state of reduced activity and lowered metabolic rate Hibernation in cold weather (bear) Estivation in warm weather (hummingbird) Figure 25.4
14 Land animals gain water by drinking and eating They lose water and solutes by evaporation and waste disposal Their kidneys, behavior, and waterproof skin conserve water
15 Connection: Sweating can produce serious water loss Water lost in thermoregulation can cause osmoregulatory problems Drinking water is the best way to prevent dehydration during exercise Figure 25.6
16 Changes in water amounts inside the cells of organisms can create homeostatic challenges. Most organisms try to maintain water balance in their cell(s), called osmoregulation Many animals also remove excess metabolic wastes when they remove excess water during the process of excretion
17 Metabolic wastes include: Water from dehydration synthesis, eating/drinking, cellular respiration Nitrogenous wastes from protein and nucleic acid (DNA/RNA) metabolism Liver converts some amino acids into other types by taking off amino groups in a process called deamination This produces ammonia (toxic), very soluble Liver combines CO 2 and NH 3 + (ammonia) to produce urea, much less toxic and can be stored Some land animals save water by excreting a virtually dry waste called uric acid
18 Animals must dispose of nitrogenous wastes Different animals excrete different types of nitrogenous wastes. ALL animals eat (including protein) ALL animals produce nitrogenous wastes Type of nitrogenous waste produced and how it is excreted is determined by where they live
19 Proteins Nucleic acids Amino acids Nitrogenous bases NH 2 Amino groups Most aquatic animals, including many fishes Mammals, amphibians, sharks, some bony fishes Birds, insects, many reptiles, land snails Most toxic Ammonia Urea Uric acid Least toxic Figure 25.8
20 Fish and many other aquatic animals excrete ammonia directly into water Many land animals (mammals), sharks and some bony fish excrete urea Many birds, insects, reptiles excrete uric acid. Dry form of waste, usually white
21 How do organisms perform excretion? Protozoa, small, unicellular, live in water, cell membrane is excretory structure, excrete wastes directly into water.
22 Cnidaria (hydra, anemone, jellyfish), simple animals, 2 cell layers & hollow body cavity, live in water, each cell excrete wastes directly into water.
23 Earthworm (annelid), segmented worm, more complex, have tissues, organ systems and blood (closed circulatory system), each segment has a pair of filtering and excretory structures called nephridia.
24 Grasshopper (arthropod), exoskeleton & jointed appendages, open circulatory system, blood not always in vessels, has Malpighian tubules that absorb waste directly from blood and put into digestive system.
25 The excretory system plays several major roles in homeostasis The excretory system expels wastes regulates water and salt balance Kidneys filter blood remove: Urea Water (Inferior vena cava) Renal artery and vein (Aorta) Ureter Bladder Urethra Kidney Salt Forms urine altogether A. THE EXCRETORY SYSTEM Figure 25.9A
26 The two human kidneys each contain about 1.25 million functional units called nephrons and filter about 180 liters of filtrate (liquid filtered from blood) each day, only excrete about 1-2 liters of urine, rest ( liters) is reabsorbed into the blood Urine leaves the kidneys via the ureters It is stored in the urinary bladder
27 Kidney has 3 functional regions: Cortex outer region: filtration Medulla middle region: concentrate urine Pelvis innermost region: collects urine and sends out of kidney Renal pelvis Ureter Renal medulla Renal cortex Bowman s capsule Renal artery Renal vein Nephron tubule Collecting duct To renal pelvis Renal cortex Renal medulla B. THE KIDNEY C. ORIENTATION OF A NEPHRON WITHIN THE KIDNEY Figure 25.9B, C
28 Each nephron consists of a folded tubule and associated blood vessels The nephrons extract a filtrate from the blood in a capillary ball called the Glomerulus due to the high pressure of the blood in the capillary and collect the filtrate into the Bowman s capsule They refine the filtrate into a much smaller amount of urine Bowman s capsule Arteriole from renal artery Arteriole from glomerulus Branch of renal vein 2 Loop of Henle with capillary network Glomerulus 1 Proximal tubule Capillaries 3 Distal tubule From another nephron Collecting duct D. DETAILED STRUCTURE OF A NEPHRON Figure 25.9D
29 Overview: The key functions of the excretory system are filtration, reabsorption, secretion, and excretion There are four steps (processes, parts) involved in urine production: Filtration: happens in the Bowman s capsule, high pressure forces liquids (water) and small solutes from the blood through the glomerulus and into the Bowman s capsule Reabsorption: nutrients and water move from the nephron tubules back into the blood capillaries, most water is reabsorbed by the Loop of Henle.
30 Secretion: kidney moves specific substances (nutrients, salts and water) back into the blood at the proximal tubule and leaves excess solutes in the filtrate, this forms urine Urine concentration and removal: reabsorb lots of water back into the blood, the urine is then removed from the kidney through the renal pelvis and into the ureter FILTRATION Nephron tubule REABSORPTION SECRETION EXCRETION H 2 O, other small molecules Urine Capillary Figure 25.10
31 Urine collected from the nephrons in the renal pelvis moves through the ureter, into the urinary bladder (muscular and elastic), bladder empties urine through the urethra and out of the body.
32 From blood to filtrate to urine: A closer look Antidiuretic hormone and other hormones regulate the amount of salt and water the kidneys excrete
33 Controlled secretion of H + and reabsorption of bicarbonate ions help regulate blood ph Secretion also includes the active transport of drugs and poisons Reabsorption of salts and urea promote the osmotic reabsorption of water
34 Blood Bowman s capsule Proximal tubule NaCl H 2 O HCO 3 Glucose and amino acids NaCl Distal tubule H 2 O HCO3 Filtrate H 2 O Salts (NaCl, etc.) HCO 3 CORTEX MEDULLA Some NH 3 H + drugs and poisons K + H + Collecting duct H + Urea Glucose Loop of Henle NaCl Amino acids Some drugs H 2 O NaCl Reabsorption Active transport Passive transport NaCl Urea H 2 O Secretion (active transport) Urine (to renal pelvis) Figure 25.11
35 25.12 Connection: Kidney dialysis can be a lifesaver A dialysis machine compensates for kidney failure It performs the function of the nephrons by removing wastes from the blood and maintaining its solute concentration
36 Line from artery to apparatus Pump Tubing made of a selectively permeable membrane Line from apparatus to vein Dialyzing solution Fresh dialyzing solution Used dialyzing solution (with urea and excess salts) Figure 25.12
37 HOMEOSTATIC FUNCTIONS OF THE LIVER The liver is vital in homeostasis It assists the kidneys by making urea from ammonia breaking down toxic chemicals (detoxifies)
38 Blood from the intestines flows through the liver before distribution to the rest of the body This allows the liver to adjust the blood s chemical content Liver Intestines Inferior vena cava Hepatic vein Hepatic portal vessel Figure 25.13
39 Skin: part of excretory system, excretes sweat (sweat gland), which is mostly water, salt and urea
40 Lungs: part of excretory system, excretes CO 2 and H 2 O
41 Disorders: Kidney failure: kidney(s) aren t working, blood is not being filtered (bad), solution is a dialysis machine (temporary) Gout: due to high protein diet, causes uric acid production and deposition in joints. Reduce protein intake and take meds to reduce uric acid production Kidney stones: based on diet (protein) and water intake
Chapter 16. Urinary System and Thermoregulation THERMOREGULATION. Homeostasis
Homeostasis Chapter 16 Urinary System and Thermoregulation! Homeostasis Maintenance of steady internal conditions despite fluctuations in the external environment! Examples of homeostasis Thermoregulation
More informationChapter 10 EXCRETION
Chapter 10 EXCRETION Control of Body Temperature and Water Balance Control of Body Temperature and Water Balance as a part of homeostasis Homeostasis means Maintenance of steady internal conditions despite
More information12/7/10. Excretory System. The basic function of the excretory system is to regulate the volume and composition of body fluids by:
Excretory System The basic function of the excretory system is to regulate the volume and composition of body fluids by: o o removing wastes returning needed substances to the body for reuse Body systems
More informationChapter 44. Osmoregulation and Excretion
Chapter 44 Osmoregulation and Excretion Overview: A Balancing Act Physiological systems of animals operate in a fluid environment Relative concentrations of water and solutes must be maintained within
More informationHomeostasis. Thermoregulation. Osmoregulation. Excretion. how organisms regulate their body temperature
Homeostasis the steady-state physiological condition of the body Ability to regulate the internal environment important for proper functioning of cells Thermoregulation Homeostasis how organisms regulate
More information3.4.6 The Excretory System in the Human
3.4.6 The Excretory System in the Human Objectives What you will need to know from this section Explain the role of the excretory system in homeostasis -- the ability and necessity to maintain constancy
More informationRegulating the Internal Environment. AP Biology
Regulating the Internal Environment 2006-2007 Conformers vs. Regulators Two evolutionary paths for organisms regulate internal environment maintain relatively constant internal conditions conform to external
More informationCh. 44 Regulating the Internal Environment
Ch. 44 Regulating the Internal Environment 2006-2007 Conformers vs. Regulators Two evolutionary paths for organisms regulate internal environment maintain relatively constant internal conditions conform
More information- process by which waste products are eliminated from an organism. 1. The maintenance of internal temperature within narrow limits is called
Ch. 10: Excretion 1. Excretion means the - disposal of nitrogen-containing wastes - process by which waste products are eliminated from an organism 1. The disposal of nitrogen-containing wastes is called
More informationOsmotic Regulation and the Urinary System. Chapter 50
Osmotic Regulation and the Urinary System Chapter 50 Challenge Questions Indicate the areas of the nephron that the following hormones target, and describe when and how the hormones elicit their actions.
More informationSalt and Water Balance and Nitrogen Excretion
Announcements Exam is in class on WEDNESDAY. Bring a #2 pencil and your UFID. You must come to your registered class section (except those with DRC accommodations). Office hours Mon 1-3 pm. Teaching evals:
More informationThe Excretory System. Biology 20
The Excretory System Biology 20 Introduction Follow along on page 376 What dangers exist if your body is unable to regulate the fluid balance of your tissues? What challenged would the body have to respond
More informationChapter 44. Regulating the Internal Environment. AP Biology
Chapter 44. Regulating the Internal Environment Homeostasis Living in the world organisms had a choice: regulate their internal environment maintain relatively constant internal conditions conform to the
More informationOsmoregulation regulates solute concentrations and balances the gain and loss of water
Ch 44 Osmoregulation & Excretion Osmoregulation regulates solute concentrations and balances the gain and loss of water Freshwater animals show adaptations that reduce water uptake and conserve solutes
More informationNovember 30, 2016 & URINE FORMATION
& URINE FORMATION REVIEW! Urinary/Renal System 200 litres of blood are filtered daily by the kidneys Usable material: reabsorbed back into blood Waste: drained into the bladder away from the heart to the
More informationExcretion and Water Balance
Excretion and Water Balance 1. Osmoregulation (water balance) a. Most marine invertebrates are osmoconformers in which the concentration of solutes in their body fluid is equal to that of their environment.
More informationCONTROLLING THE INTERNAL ENVIRONMENT
AP BIOLOGY ANIMAL FORM & FUNCTION ACTIVITY #5 NAME DATE HOUR CONTROLLING THE INTERNAL ENVIRONMENT KIDNEY AND NEPHRON NEPHRON FUNCTIONS Animal Form & Function Activity #5 page 1 NEPHRON STRUCTURE NEPHRON
More informationOsmoregulation and Excretion
Osmoregulation and Excretion 1. There are two basic solutions to the problem of balancing water gain with water loss. a. The first, available only to marine animals, is to be an osmoconformer. The concentration
More informationExcretion and Water Balance
Excretion and Water Balance In the body, water is found in three areas, or compartments: Plasma, the liquid portion of the blood without the blood cells, makes up about 7 percent of body fluid. The intercellular
More informationApril 08, biology 2201 ch 11.3 excretion.notebook. Biology The Excretory System. Apr 13 9:14 PM EXCRETORY SYSTEM.
Biology 2201 11.3 The Excretory System EXCRETORY SYSTEM 1 Excretory System How does the excretory system maintain homeostasis? It regulates heat, water, salt, acid base concentrations and metabolite concentrations
More informationOsmoregulation and the Excretory System
Honors Biology Study Guide Chapter 25.4 25.10 Name Osmoregulation and the Excretory System FUNCTIONS OF THE EXCRETORY SYSTEM OSMOREGULATION Freshwater: Marine: Land Animals: Sources of Nitrogenous Wastes?
More informationOsmoregulation and Excretion
Chapter 44 Osmoregulation and Excretion PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from
More informationNephron Structure inside Kidney:
In-Depth on Kidney Nephron Structure inside Kidney: - Each nephron has two capillary regions in close proximity to the nephron tubule, the first capillary bed for fluid exchange is called the glomerulus,
More informationBiology Slide 1 of 36
Biology 1 of 36 38 3 The Excretory System 2 of 36 Functions of the Excretory System 1.Function: process which eliminates metabolic wastes 3 of 36 Functions of the Excretory System (The skin excretes excess
More informationPARTS OF THE URINARY SYSTEM
EXCRETORY SYSTEM Excretory System How does the excretory system maintain homeostasis? It regulates heat, water, salt, acid-base concentrations and metabolite concentrations 1 ORGANS OF EXCRETION Skin and
More informationChapter 12. Excretion and the Interaction of Systems
Chapter 12 Excretion and the Interaction of Systems 1 2 Goals for This Chapter 1. Identify the main structures and functions of the human excretory system 2. Explain the function of the nephron 3. Describe
More informationWHY DO WE NEED AN EXCRETORY SYSTEM? Function: To eliminate waste To maintain water and salt balance To maintain blood pressure
EXCRETORY SYSTEM WHY DO WE NEED AN EXCRETORY SYSTEM? Function: To eliminate waste To maintain water and salt balance To maintain blood pressure These wastes include: Carbon dioxide Mostly through breathing
More informationChapter 32 Excretion
Chapter 32 Excretion 3.4 Learning Objectives 3.4.6 The Excretory System in Humans 1. Role of the excretory system in homeostasis. 2. Importance of temperature regulation within the body. 3. Outline the
More informationWater Balance, Thermoregulation and Excretion
Water Balance, Thermoregulation and Excretion These three components of homeostasis are closely related. Evaporative loss of water (sweating) is a key means of thermoregulation. You can t afford to lose
More informationAP Biology. Homeostasis. Chapter 44. Regulating the Internal Environment. Homeostasis
Chapter 44. Regulating the Internal Environment omeostasis Living in the world organisms had a choice: regulate their internal environment maintain relatively constant internal conditions conform to the
More informationOsmoregulation_and_Excretion_p2.notebook June 01, 2017
What water balance problems face organisms? Animals balance water gain and loss in one of two ways: 1. Osmoconformers are isotonic to their surroundings so they do not lose or gain water they usually live
More informationNOTES: CH 44 Regulating the Internal Environment (Homeostasis & The Urinary System)
NOTES: CH 44 Regulating the Internal Environment (Homeostasis & The Urinary System) HOMEOSTASIS **Recall HOMEOSTASIS is the steady-state physiological condition of the body. It includes: 1) Thermoregulation:
More informationI. Metabolic Wastes Metabolic Waste:
I. Metabolic Wastes Metabolic Waste: a) Carbon Dioxide: by-product of cellular respiration. b) Water: by-product of cellular respiration & dehydration synthesis reactions. c) Inorganic Salts: by-product
More informationOsmoregulation. 19 th March 2012
Osmoregulation 19 th March 2012 1 Outline Body Fluid Regulation Aquatic Animals Marine Bony Fish Freshwater Bony Fish Terrestrial Animals Nitrogenous Waste Products Organs of Excretion Urinary System in
More informationExcretion (IGCSE Biology Syllabus )
Excretion (IGCSE Biology Syllabus 2016-2018) Structure of the Kidney Excretion is the removal from organisms of toxic materials, the waste products of metabolism and substances in excess of requirements
More informationUrinary System and Excretion. Bio105 Lecture 20 Chapter 16
Urinary System and Excretion Bio105 Lecture 20 Chapter 16 1 Outline Urinary System I. Function II. Organs of the urinary system A. Kidneys 1. Function 2. Structure III. Disorders of the urinary system
More informationStructures of the Excretory System include: ü Skin ü Lung ü Liver ü Kidneys ü Ureter ü Urinary Bladder ü Urethra
Excretory System Structures of the Excretory System include: ü Skin ü Lung ü Liver ü Kidneys ü Ureter ü Urinary Bladder ü Urethra Function of the Excretory System The function of the excretory system is
More informationwater balance water nitrogen chapter 42
water balance chapter 42 water osmoregulation water and dissolved solutes adjusting the composition of internal body fluids in arthropods -- hemolymph in vertebrates -- interstitial fluid transport epithelia
More informationWhat is excretion? Excretion is the removal of metabolic waste from the body.
Excretion What is excretion? Excretion is the removal of metabolic waste from the body. Excretion in Plants Plants produce very little waste products. Plants lose oxygen and water vapour through the stomata.
More informationHomeostasis and Osmoregulation
Homeostasis and Osmoregulation Bởi: OpenStaxCollege Homeostasis refers to the relatively stable state inside the body of an animal. Animal organs and organ systems constantly adjust to internal and external
More informationBody Fluid Regulation and Excretion. Chapter 36
Body Fluid Regulation and Excretion Chapter 36 Excretion The excretory system monitors the concentration of body fluids and removes harmful or waste substances from the body Water, nutrients and minerals
More informationOSMOREGULATION AND EXCRETION
1 2 3 4 5 6 OSMOREGULATION AND EXCRETION OSMOREGULATION Process by which animals control their solute concentrations and balance water gain and loss Freshwater animals show adaptations that reduce water
More informationSunday, July 17, 2011 URINARY SYSTEM
URINARY SYSTEM URINARY SYSTEM Let s take a look at the anatomy first! KIDNEYS: are complex reprocessing centers where blood is filtered through and waste products are removed. Wastes and extra water become
More informationOutline Urinary System. Urinary System and Excretion. Urine. Urinary System. I. Function II. Organs of the urinary system
Outline Urinary System Urinary System and Excretion Bio105 Chapter 16 Renal will be on the Final only. I. Function II. Organs of the urinary system A. Kidneys 1. Function 2. Structure III. Disorders of
More informationExcretion Chapter 29. The Mammalian Excretory System consists of. The Kidney. The Nephron: the basic unit of the kidney.
Excretion Chapter 29 The Mammalian Excretory System consists of The Kidney 1. Vertebrate kidneys perform A. Ion balance B. Osmotic balance C. Blood pressure D. ph balance E. Excretion F. Hormone production
More informationExcretory System. Biology 2201
Excretory System Biology 2201 Excretory System How does the excretory system maintain homeostasis? It regulates: Body heat Water-salt concentrations Acid-base concentrations Metabolite concentrations ORGANS
More informationExcretory System. Excretory System
Excretory System Biology 2201 Excretory System How does the excretory system maintain homeostasis? It regulates: Body heat Water-salt concentrations Acid-base concentrations Metabolite concentrations 1
More informationExcretory System 1. a)label the parts indicated above and give one function for structures Y and Z
Excretory System 1 1. Excretory System a)label the parts indicated above and give one function for structures Y and Z W- X- Y- Z- b) Which of the following is not a function of the organ shown? A. to produce
More informationTitle: Oct 12 3:37 PM (1 of 39) Ch 44 Osmoregulation and Excretion
Title: Oct 12 3:37 PM (1 of 39) Ch 44 Osmoregulation and Excretion Water Balance and Waste Disposal osmoregulation managing water content and solute composition based on movements of solutes excretion
More informationOutline Urinary System
Urinary System and Excretion Bio105 Lecture Packet 20 Chapter 16 Outline Urinary System I. Function II. Organs of the urinary system A. Kidneys 1. Function 2. Structure B. Urine formation 1. Hormonal regulation
More informationQuestion 1: Solution 1: Question 2: Question 3: Question 4: Class X The Excretory System Biology
A. MULTIPLE CHOICE TYPE: (select the most appropriate option in each case) Book Name: Selina Concise Question 1: Excretion primarily involves (a) removal of all byproducts during catabolism (b) removal
More informationCIE Biology A-level Topic 14: Homeostasis
CIE Biology A-level Topic 14: Homeostasis Notes Communication is essential for the survival of organism as all living organisms must be able to detect and respond to changes in both their internal and
More informationHomeostasis. Homeostasis refers to maintaining internal stability within an organism and returning to a particular stable state after
Homeostasis Homeostasis Homeostasis refers to maintaining internal stability within an organism and returning to a particular stable state after a fluctuation. Homeostasis Changes to the internal environment
More informationYour Goal. Animal s Urinary and Osmoregulatory systems. Paragraph 1: Introduction Goal introduce the paper. Paragraph 1: Introduction
Your Goal Animal s Urinary and Osmoregulatory systems l Be able to tell the story of kidney evolution as an essay. Maintenance Introduction Goal introduce the paper l Homeostasis is the of Maintenance
More informationChapter 13 The Urinary System
Biology 12 Name: Urinary System Per: Date: Chapter 13 The Urinary System Complete using BC Biology 12, page 408-435 13.1 The Urinary System pages 412-413 1. As the kidneys produce urine, they carry out
More informationNephron Function and Urine Formation. Ms. Kula December 1, 2014 Biology 30S
Nephron Function and Urine Formation Ms. Kula December 1, 2014 Biology 30S The Role of the Nephron In order for the body to properly function and maintain homeostasis, the amount of dissolved substances
More informationKidney Lab. Name: By the end of this lab, you should:
Kidney Lab Name: Kidneys do a grand job removing the toxic waste products of metabolism. This process is called excretion. Our kidneys produce urine which contains urea, excess salts and excess water.
More informationEXCRETION QUESTIONS. Use the following information to answer the next two questions.
EXCRETION QUESTIONS Use the following information to answer the next two questions. 1. Filtration occurs at the area labeled A. V B. X C. Y D. Z 2. The antidiuretic hormone (vasopressin) acts on the area
More information1. a)label the parts indicated above and give one function for structures Y and Z
Excretory System 1 1. Excretory System a)label the parts indicated above and give one function for structures Y and Z W- renal cortex - X- renal medulla Y- renal pelvis collecting center of urine and then
More informationUNIT 3 Conditions supporting life
Biology Form 4 Page 32 Ms. R. Buttigieg UNIT 3 Conditions supporting life In this unit we shall be seeing how an important condition that supports life is the ability of the organism to maintain a constant
More informationExcretion and Waste Management. Biology 30S - Miss Paslawski
Excretion and Waste Management Biology 30S - Miss Paslawski Lesson 1 Waste Products and Organs 2 3 Excretion Excretion: Process by which dissolved metabolic wastes are separated from body fluids and removed
More informationLesson Overview. The Excretory System. Lesson Overview The Excretory System
Lesson Overview 30.4 THINK ABOUT IT It s a hot day and you gulp down water. As you drink, you begin to wonder. Where s all that water going? Will it just dilute your blood, or is something in your body
More informationorgans of the urinary system
organs of the urinary system Kidneys (2) bean-shaped, fist-sized organ where urine is formed. Lie on either sides of the vertebral column, in a depression beneath peritoneum and protected by lower ribs
More informationFifth Year Biology. Excretion. Miss Rochford
Fifth Year Biology Excretion Miss Rochford In this Topic Excretion in plants Excretion and homeostasis Skin Organs of excretion Urinary system Kidneys Nephron Control of urine volume Characteristics of
More informationThe Excretory System
The Excretory System The excretory system The excretory system includes the skin, lungs and kidneys which all release metabolic wastes from the body. The kidneys, skin and the lungs are the principle organs
More informationA. Correct! Flushing acids from the system will assist in re-establishing the acid-base equilibrium in the blood.
OAT Biology - Problem Drill 16: The Urinary System Question No. 1 of 10 1. Which of the following would solve a drop in blood ph? Question #01 (A) Decreased retention of acids. (B) Increased excretion
More informationEXCRETION IN HUMANS 31 JULY 2013
EXCRETION IN HUMANS 31 JULY 2013 Lesson Description In this lesson we: Discuss organs of excretion Look at the structure of the urinary system Look at the structure and functioning of the kidney Discuss
More informationBIOLOGY - CLUTCH CH.44 - OSMOREGULATION AND EXCRETION.
!! www.clutchprep.com Osmoregulation regulation of solute balance and water loss to maintain homeostasis of water content Excretion process of eliminating waste from the body, like nitrogenous waste Kidney
More informationNephron Anatomy Nephron Anatomy
Kidney Functions: (Eckert 14-17) Mammalian Kidney -Paired -1% body mass -20% blood flow (Eckert 14-17) -Osmoregulation -Blood volume regulation -Maintain proper ion concentrations -Dispose of metabolic
More informationRenal System and Excretion
Renal System and Excretion Biology 105 Lecture 19 Chapter 16 Outline Renal System I. Functions II. Organs of the renal system III. Kidneys 1. Structure 2. Function IV. Nephron 1. Structure 2. Function
More informationUrinary system. Lab-7
Urinary system Lab-7 Excretion: processes that remove wastes and excess materials from the body Urinary system (kidneys): excretes nitrogenous wastes, excess solutes, and water The Kidneys Regulate Water
More informationGlossary. Maintain keep up. Constant the same. Internal inside the body. Environment surroundings of the body.
Homeostasis Glossary Maintain keep up. Constant the same. Internal inside the body. Environment surroundings of the body. What is Homeostasis? Body cells work best if they have the correct Temperature
More informationHomeostasis and Osmoregulation *
OpenStax-CNX module: m45534 1 Homeostasis and Osmoregulation * OpenStax This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 By the end of this section,
More informationRefer to the figure below, a diagram of a renal tubule, to answer the following questions.
1. The digestion and utilization of which nutrient creates the greatest need for osmoregulation by the kidneys? a. protein b. starch c. Fat d. Oil e. cellulose 2. Which of the following is true of urea?
More informationhttp://www.youtube.com/watch?v=8vp5jeap3k4 27 2012 2012 Welcome back! Please write a response to the following: Imagine a time that you have been stressed, please describe the physical sensations that
More informationExcretion: is the removal of waste products formed by metabolism, out of the body
Excretion in Humans Excretion: is the removal of waste products formed by metabolism, out of the body Accumulation of wastes in the cells would affect the normal functioning of the cells By getting rid
More informationThe Urinary System 15PART A. PowerPoint Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College
PowerPoint Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College The Urinary System 15PART A Functions of the Urinary System Elimination of waste products Nitrogenous
More informationChapter 11 Lecture Outline
Chapter 11 Lecture Outline See separate PowerPoint slides for all figures and tables preinserted into PowerPoint without notes. Copyright 2016 McGraw-Hill Education. Permission required for reproduction
More informationCh17-18 Urinary System
Ch17-18 Urinary System Main Function: Filter the blood Other Functions: maintain purity and consistency of internal fluids eliminates nitrogenous wastes, toxins, and drugs from the body regulates blood
More informationA&P 2 CANALE T H E U R I N A R Y S Y S T E M
A&P 2 CANALE T H E U R I N A R Y S Y S T E M URINARY SYSTEM CONTRIBUTION TO HOMEOSTASIS Regulates body water levels Excess water taken in is excreted Output varies from 2-1/2 liter/day to 1 liter/hour
More informationBiology 110 Organisms & Environment Desertification Unit Page 1 of 7
Biology 110 rganisms & Environment Desertification Unit Page 1 of 7 Based on Mader, Sylvia S. 1996. Biology - 5th Ed.. WCB and Cox, G.W. 1997. Conservation Biology - 2nd ed. WCB [Chapter 8] and Levine,
More informationUse the following diagram to answer the next question. 1. In the diagram above, pressure filtration occurs in a. W b. X c. Y d. Z
Part A: Multiple Choice Questions Value: 32 Marks Suggested time: 40 minutes Instructions: For each question select the best answer and record your choice on the Scantron card provided. Using an HB pencil,
More information28/04/2013 LEARNING OUTCOME C13 URINARY SYSTEM STUDENT ACHIEVEMENT INDICATORS STUDENT ACHIEVEMENT INDICATORS URINARY SYSTEM & EXCRETION
LEARNING OUTCOME C13 Analyse the functional interrelationships of the structures of the urinary system Learning Outcome C13 URINARY SYSTEM STUDENT ACHIEVEMENT INDICATORS Students who have fully met this
More informationOsmoregulation and Excretion
Animal Life and Excretion Harder for multicellular organisms Internal circulation Coordination, information transfer Structural maintenance Movement Maintenance of homeostatic internal environment 15 July
More informationThe excretory system
Key Words The excretory system haemoglobin Convoluted tubule Loop of Henle nephron ureter/-s sweat glands Bowman s capsule Glomerulus cholesterol Bladder Excretion is the removal of the waste products
More informationYR10. IGCSE Biology. Homeostasis
YR10 IGCSE Biology Homeostasis Name: Prepared by William Green DBGS 2010 Homeostasis Body cells work best if they have the correct conditions e.g. 1. 2. 3. Write the definition of Homeostasis in the box
More information5.Which part of the nephron removes water, ions and nutrients from the blood?
Uro question 1.While reading a blood test I notice a high level of creatinine, I could assume from this that A) There is a possibility of a UTI B) There is a possibility of diabetes C) There is a possibility
More informationWhy is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like
Page 95»Question» Question 1: Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans? Multicellular organisms such as humans possess complex body designs.
More informationThe Digestive System and Excretory System
The Digestive System and Excretory System By: Kay Foos, Amanda Smith, Joanna Dare, Lilli Blumkin Kay Digestive System The function of this system is to break down the food particles into materials the
More information5. Maintaining the internal environment. Homeostasis
5. Maintaining the internal environment Homeostasis Blood and tissue fluid derived from blood, flow around or close to all cells in the body. Blood and tissue fluid form the internal environment of the
More informationFrom Blood Filtrate to Urine: A Closer Look
Blood Vessels Associated with the Nephrons Each nephron supplied with blood by an afferent arteriole branch of renal artery divides into glomerular capillaries capillaries converge as they leave glomerulus
More informationOne Minute Movies: Molecular Action at the Nephron Joy Killough / Westwood High School / Austin,TX
One Minute Movies: Molecular Action at the Nephron Joy Killough / Westwood High School / Austin,TX To prepare your nephron model: ( A nephron is a tubule and the glomerulus. There are about a million of
More informationThe Urinary System. BIOLOGY OF HUMANS Concepts, Applications, and Issues. Judith Goodenough Betty McGuire
BIOLOGY OF HUMANS Concepts, Applications, and Issues Fifth Edition Judith Goodenough Betty McGuire 16 The Urinary System Lecture Presentation Anne Gasc Hawaii Pacific University and University of Hawaii
More informationKidneys and Homeostasis
16 The Urinary System The Urinary System OUTLINE: Eliminating Waste Components of the Urinary System Kidneys and Homeostasis Urination Urinary Tract Infections Eliminating Waste Excretion Elimination of
More informationChapter 44: Osmoregulation and Excretion
Name Period The steady-state physiological condition that organisms must maintain is termed homeostasis. Osmoregulation and excretion are frequently cited examples of homeostasis and are the central ideas
More informationS.N.KANSAGRA SCHOOL BIOLOGY DEPARTMENT. 1. Fibrous connective tissue covering the kidneys.
Name Q1. Name the following: S.N.KANSAGRA SCHOOL Date 1. Fibrous connective tissue covering the kidneys. 2. The deep notch present on the inner surface of the kidney. 3. The peripheral dark reddish brown
More informationQUESTIONSHEET 1. Read through the following passage on homeostasis and then answer the questions.
QUESTIONSHEET 1 Read through the following passage on homeostasis and then answer the questions. Homeostasis is the regulation of the internal environment within narrow limits. This gives the organism
More information1.&Glomerular/Pressure&Filtration&
Urine&Formation& Overall&Process&! Urine gets rid of wastes (NH 3, urea, uric acid, creatinine) and other substances (vitamins, penicillin, histamines) found in excess in the blood!! blood is filtered
More information1. Urinary System, General
S T U D Y G U I D E 16 1. Urinary System, General a. Label the figure by placing the numbers of the structures in the spaces by the correct labels. 7 Aorta 6 Kidney 8 Ureter 2 Inferior vena cava 4 Renal
More informationCREATININE: is another nitrogenous waste. Creatinine comes from creatinine phosphate in muscle metabolism (a Phosphate-storage molecule)
BIOLOGY 12 - EXCRETION: CHAPTER NOTES Your cells are constantly carrying out chemical reactions to maintain homeostasis. Many of these chemical reactions produce wastes that must be removed from cells
More information