Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159080
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: Mcgraw-hill Education,
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Textbook Question
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Chapter 58, Problem 1PL

Urine consists of about __________ percent water and __________ percent solutes.
a. 100;0
b. 95;5
c. 90; 10
d. 50; 50

Expert Solution & Answer
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Summary Introduction

Introduction :

The function of the excretory system is to remove the waste of the body. It maintains the chemical composition of the body fluids by removing the unwanted components and maintaining the level of water and electrolytes in the body. Moreover, the level of water in the body is maintained by the excretory system.

Answer to Problem 1PL

Correct answer :

Option (b), 95, 5.

Explanation of Solution

Explanation/justification for the correct answer :

Option (b) is 95, 5. Urine is composed of 95% water approximately, and the rest 5% is composed of solutes, such as, sodium, urea, potassium, chloride, and creatinine. Hence, this option is correct.

Explanation for incorrect answer :

Option (a) is 100, 0. Urine is composed of 95 percent water and 5 percent solutes. Hence, this option is incorrect.

Option (c) is 90, 10. Urine is composed of 95 percent water and 5 percent solutes. Hence, this option is incorrect.

Option (d) is 50, 50. Urine is composed of 95 percent water and 5 percent solutes. Hence, this option is incorrect.

Conclusion

Option (b), 95, 5.

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