Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 48, Problem 4TYK
Summary Introduction
Introduction:
Other than the simple animal groups, most of the invertebrates, either osmoconformers or the osmoregulators, excrete their
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A 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.
Mention the function of the following(a) Ureters in frog(b) Malpighian tubules(c) Body wall in earthworm
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.
Chapter 48 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 48.1 - Define the terms osmosis, osmolarity, hypoosmotic,...Ch. 48.2 - How are protonephridia, metanephridia, and...Ch. 48.3 - Prob. 1SBCh. 48.3 - Prob. 2SBCh. 48.4 - Prob. 1SBCh. 48.5 - Prob. 1SBCh. 48.5 - Reptiles and birds excrete nitrogenous wastes in...Ch. 48.6 - Distinguish between ectothermy and endothermy....Ch. 48.7 - Prob. 1SBCh. 48.7 - Prob. 2SB
Ch. 48.8 - Prob. 1SBCh. 48 - Which of the following statements about...Ch. 48 - Prob. 2TYKCh. 48 - Prob. 3TYKCh. 48 - Prob. 4TYKCh. 48 - Prob. 5TYKCh. 48 - Which of the following correctly describes a part...Ch. 48 - Which of the following is an example of...Ch. 48 - Prob. 8TYKCh. 48 - Prob. 9TYKCh. 48 - Prob. 10TYKCh. 48 - Prob. 11TYKCh. 48 - Discuss Concepts As a person ages, nephron tubules...Ch. 48 - Prob. 13TYKCh. 48 - Prob. 14TYKCh. 48 - Prob. 15TYKCh. 48 - Prob. 16TYKCh. 48 - Prob. 1ITDCh. 48 - Prob. 2ITDCh. 48 - Prob. 3ITD
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- the process that initiates urine formation in most types of vertebrates is ultrafiltration of fluid from the blood plasma into kidney tubules under the force of blood pressure. What properties of the blood plasma in the urine-forming structures of the kidney are likely to affect the rate of ultrafiltration into the kidney tubules? Why is failure of urine production a potential side effect of heart disease?arrow_forwardUnlike an earthworm’s metanephridia,a mammalian nephron(A) is intimately associated with a capillarynetwork.(B) functions in both osmoregulation andexcretion.(C) receives filtrate from blood instead of coelomic fluid.(D) has a transport epithelium.arrow_forwardExcretion of a hypertonic urine in humans is associated best witha. the glomerular capsule.b. the proximal convoluted tubule.c. the loop of the nephron.d. the collecting duct.e. Both c and d are correct.arrow_forward
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- Various drugs used to treat hypertension act through the kidney and urine filtration system. A common drug to treat hypertension is thiazide, which acts directly on the cells of the distal convoluted tubule. Hypothesize about why thiazide lowers blood pressure, based on the anatomical feature of the kidney it targets.arrow_forwardWhich of the following is, are function of the kidneys? a. Control plasma volume b. Control blood pressure c. Control red blood cell production d. All of thesearrow_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_forward
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