Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do. a. fewer nephrons b. longer nephron loops c. shorter nephron loops d. longer collecting ducts e. longer convoluted tubules

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Answer 1

Textbook Question

Chapter 23, Problem 9TYR

Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do.

a. fewer nephrons

b. longer nephron loops

c. shorter nephron loops

d. longer collecting ducts

e. longer convoluted tubules

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

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Students have asked these similar questions

The 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.

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.

Unlike 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.

Answer 2

Textbook Question

Chapter 23, Problem 9TYR

Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do.

a. fewer nephrons

b. longer nephron loops

c. shorter nephron loops

d. longer collecting ducts

e. longer convoluted tubules

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

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Answer 3

Textbook Question

Chapter 23, Problem 9TYR

Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do.

a. fewer nephrons

b. longer nephron loops

c. shorter nephron loops

d. longer collecting ducts

e. longer convoluted tubules

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

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Answer 4

Textbook Question

Chapter 23, Problem 9TYR

Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do.

a. fewer nephrons

b. longer nephron loops

c. shorter nephron loops

d. longer collecting ducts

e. longer convoluted tubules

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The kidney’s structural unit is nephrons. Glomeruli are a network of capillaries that help in blood filtration. This yields filtered water and soluble substances into a cup-like sac called the Bowman’s capsule. Glomerulus is supported structurally by glomerular mesangial cells.

Answer 12

Answer to Problem 9TYR

Correct answer:

Beavers have relatively little need to conserve water and could therefore be expected to have shorter nephron loops than humans do. Therefore, option c is correct.

Answer 13

Explanation of Solution

Justify reasons for the correct statement:

Animals that are in need to preserve water have numerous and lengthier nephron loops compared to the other animals with a slight need to conserve water.

Option (c) is given as “shorter nephron loop”.

Due to the absence of a nephron loop, the amphibians and fish produce urine that is isotonic to their blood plasma. For example, beavers, which are aquatic mammals, have smaller nephron loops, and thus the conservation of water is less.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “fewer nephrons”.

Humans can survive with few nephrons, but the output of urine will be only 30mL per hour. Inadequate nephrons will lead to uremia. Hence, it is a wrong answer.

Option (b) is given as “longer nephron loops”.

The longer length of the loop helps in more reabsorption of salts in the medulla and increases more the volume of water to be absorbed. Hence, it is a wrong answer.

Option (d) is given as “longer collecting ducts”.

The longer collecting duct aids in making the urine more concentrated by absorbing more volume water in the medulla. Hence, it is a wrong answer.

Option (e) is given as “longer convoluted tubules”.

The proximal convoluted tubule is the longest of the convoluted tubules, and its major purpose is absorption. Hence, it is a wrong answer.

Hence, options (a), (b), (d), and (e) are incorrect.

Answer 14

Conclusion

The beavers normally have a shorter nephron loop because there is no need for water conservation, as they are aquatic mammals.

Answer 15

Ch. 23.1 - State at least four functions of the kidneys other...Ch. 23.1 - Prob. 2BYGO Ch. 23.1 - Prob. 3BYGO Ch. 23.1 - Prob. 1AYLO Ch. 23.1 - Prob. 2AYLO Ch. 23.1 - Prob. 3AYLO Ch. 23.1 - Blood urea nitrogen, azotemia, and uremia, and the...Ch. 23.1 - Prob. 5AYLO Ch. 23.2 - Prob. 4BYGO Ch. 23.2 - Prob. 5BYGO

Beavers have relatively little need to conserve water and could therefore be expected to have _______ than humans do. a. fewer nephrons b. longer nephron loops c. shorter nephron loops d. longer collecting ducts e. longer convoluted tubules

Solution Summary: The author explains that the nephrons are a network of capillaries that help in blood filtration.

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