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 16TYK
Summary Introduction
To review:
The evolutionary significance of different excretory products in humans, reptiles, and birds.
Introduction:
Humans produce urea as an excretory product through their kidneys, whereas reptiles and birds produce uric acid. In reptiles and birds, excretion of uric acid is an evolutionary adaptation to conserve water.
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Which type of animals consume little or no energy in maintaining water balance?A. Birds B. Mammals C. Marine vertebrates D. Marine invertebrates The following are involved in the regulation of mammalian kidney function except:A. ADH B. Aldosterone C. Renin D. Oxygen
Compared to those of birds and lizards, the kidneys of mammals ______.
can produce urine with a higher osmolarity
cannot concentrate the urine as much
"have about the same ability to concentrate the urine, but are more efficient in producing uric acid"
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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- Which of the following does not contribute to the process of filtration? (a) active transport by epithelial cells lining renal tubules (b) large surface area for filtration (c) low permeability of glomerular capillaries (d) high hydrostatic blood pressure in glomerular capillaries (e) podocytesarrow_forwardYou are studying renal function in different species of mammals that are found in very different environments. You look at species from a desert environment and compare them with ones from a tropical environment. The desert species would be expected to havea. shorter loops of Henle than the tropical species.b. longer loops of Henle than the tropical species.c. shorter proximal convoluted tubules than the tropical species.d. longer distal convoluted tubules than the tropical species.arrow_forwardThe bodily fluids of freshwater fish contain higher concentration of dissolved solids in their surroundings, so they tend to bloat (take in water) or lose electrolytes. How can freshwater fish avoid this? 1.) By drinking lots of water? 2.) By actively transporting ions out from the gills into the water? 3.) by excreting highly concentrated urine? 4.) by resorbing ions in nephronsarrow_forward
- . Describe another way that our kidneys contribute to homeostasis (besides osmoregulation and pH balancearrow_forwardIn a short essay (100–150 words), compare how membrane structures in the loop of Henle and collecting duct of the mammalian kidney enable water to be recovered from filtrate in the process of osmoregulation.arrow_forwardthe 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_forward
- The mammalian kidney contains an immense network of nephrons that functions to conserve water by producing urine that is hyperosmotic compared to other body fluids. Explain how the transport epithelia of the nephron and collecting duct are able to use transport mechanisms to process the filtrate as it moves through the vessels and produce a hyperosmotic filtrate.arrow_forwardExplain how the kidney, plays an important role in the osmoregulation of the human body.arrow_forwardCompare and contrast ion and water balance in animals that use protonephridia, metanephridia, and kidneys. Which of the 6 functions of a vertebrate kidney are accomplished by each, and how do they achieve these functions?arrow_forward
- Why are humans not able to meet their water requirements by drinking seawater? Assume seawater has a concentration of 1400 mOsM. In your explanation, consider both the renal system and the digestive system. Additionally, describe the physiology of two symptoms of excessive seawater consumption that occur prior to death.arrow_forwardDrinking seawater cannot prevent death by dehydration. What would result if humans attempted to alleviate their dehydration by drinking seawater? justify your answer by describing kidney physiology. why wouldn't reflexes, in response to dehydration, fully compensate and what does this illustrate about the force allowing kidneys to retain water under nromal conditions?arrow_forwardPlease explain this in the most simple way. Explain the kidney's role in water conservation. How much water is reabsorbed (by following other reabsorbed substances) by osmosis? How much water does the nephron loop and collecting duct have to be "tricked" into reabsorbing? How exactly does that work? How do hormones control this process? What effect does alcohol have?arrow_forward
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