Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 49, Problem 7TY
Summary Introduction
Introduction: The urinary system is a part of the excretory system in mammals. The urinary system is composed of ureters, kidneys, the urethra and the urinary bladder. Urea is excreted from the body of mammals through urine.
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Many types of fishes live in freshwater. Generally, water moves by osmosis from the surrounding fresh water into the fish's body. This observation helps to explain which feature of the excretory systems of freshwater fishes?
a. They tend to produce dilute, watery urine.
b. They tend to produce concentrated, dark urine.
c. They do not produce urine, but instead conserve or re-use nitrogenous wastes.
d. They may produce either dilute or concentrated urine, depending on the activity of the fish.
In reptiles, distal collecting tubules merge to form collecting ducts, which ultimately form the ____.
a. ureter
b. urodeum
c. cloaca
d. renal vein
Mention the function of the following(a) Ureters in frog(b) Malpighian tubules(c) Body wall in earthworm
Chapter 49 Solutions
Biology
Ch. 49.1 - Prob. 1CCCh. 49.2 - Core Skill: Connections In what other organ is a...Ch. 49.2 - Prob. 2CSCh. 49.2 - Prob. 3CSCh. 49.3 - Prob. 1CSCh. 49 - Prob. 1TYCh. 49 - Prob. 2TYCh. 49 - Prob. 3TYCh. 49 - Prob. 4TYCh. 49 - Prob. 5TY
Ch. 49 - Prob. 6TYCh. 49 - Prob. 7TYCh. 49 - Prob. 8TYCh. 49 - Prob. 9TYCh. 49 - Prob. 10TYCh. 49 - Define nitrogenous waste, and list the main types...Ch. 49 - List and describe the three processes involved in...Ch. 49 - Prob. 3CQCh. 49 - Prob. 1COQCh. 49 - Briefly discuss the parts and functions of the...
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- Blood pressure forces water and small solutes out of blood and into nephrons during ________. a. glomerular filtration c. tubular secretion b. tubular reabsorption d. both a and carrow_forwardA pt was born with a rare genetic disorder in which the proximal tubules of her nephrons express half the number of aquaporins as normal. What will result? A. reduced reabsorption of water, although as much reabsorption of Na+ as is typical? b. reduced reabsorption of water, Na+ and glucose in the proximal tubules? c. Reduced reabsorption of both water and Na+ in equal proportions? D. Reduced reabsorption of all materials in the proximal tubules.arrow_forwardThe urodeum is the a.) Filtering organ that replaces the mammalian kidney b.) Middle chamber of the cloaca c.) Material excreted by amphibians d.) Structure that allows reptiles to produce urine that's more concentrated than their blood.arrow_forward
- How would damage to the renal capillaries resulting in an increase in protein filtration and urinary excretion affect net filtration pressure in the systemic circulation? a. Increase capillary reabsorption due to an increase in interstitial colloid osmotic pressure b. Increase capillary filtration due to an increase in interstitial hydrostatic pressure c. Increase capillary filtration due to a decrease in blood colloid osmotic pressure d. Increase capillary reabsorption due to increased blood hydrostatic pressurearrow_forwardWhich of these is not a function of the kidneys? A) The kidneys regulate the plasma volume B) The kidneys help to regulate blood pressure C) The kidneys help control the rate of red blood cell production D) The kidneys deactivate vitamin D and stimulate the activity of osteoclastsarrow_forwardLong nephron loopsa. are common in animals with access to abundant freshwater.b. allow urine to become concentrated within thecollecting duct.c. are the most common type of nephron loop in humans.d. extend deep into the renal cortex.arrow_forward
- The kidneys bladder and ureters make up the? arrow_forwardThe hormone ANP is released from the heart and causes the urinary system to A) decrease urine volume and increase blood volume. B) increase urine volume and blood volume. C) decrease urine volume and blood volume. D) increase urine volume and decrease blood volume.arrow_forwardWhich organ serves as the storage organ for the excretory system? a stomach b bladder c ureter d kidneyarrow_forward
- The return of filtered molecules from the nephron packet to the blood is called a. Excretion b. Reabsorption c. Filtration d. Secretionarrow_forwardThe first step in urine production is called filtration and is a process that takes place because the blood pressure in ___________ is so high that water, salts and other small molecules are squeezed out in ____________. a) glomerulus, bowmans capsule b) Efferent arterioles, proximal tubules c) bowmans capsule, glomerulus d) glomerulus, proximal tubulesarrow_forwardA viral infection that specifically interferes with the reabsorption of ions from the glomerular filtrate would attack cells located in thea. Bowman’s capsule.b. glomerulus.c. renal tubules.d. collecting duct.arrow_forward
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