HUMAN ANAT&PHYS&MOD MA&P/ET&PHOTO ATLAS
HUMAN ANAT&PHYS&MOD MA&P/ET&PHOTO ATLAS
2nd Edition
ISBN: 9780135170717
Author: AMERMAN
Publisher: PEARSON
Question
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Chapter 25, Problem 1CYR
Summary Introduction

Introduction:

The body fluids, electrolytes, and the acid-base homeostasis have an important role in the human body. These components help in the muscle tissue, nervous tissue, maintained by the respiratory system and involved in the digestive and urinary system of the body. Body fluids are the materials, which have water as their main component.

Expert Solution & Answer
Check Mark

Answer to Problem 1CYR

Correct answer:

The amount of a variable that is gained by the body through ingestion equals the amount that is lost from the body.

Explanation of Solution

Justification/ Explanation for the correct answer:

Option (a) states that the amount of a variable that is gained by the body through ingestion equals the amount that is lost from the body. The principle of mass balance states that the amount gained and lost by the body must be equal. The principle of mass balance is followed by water in the human body. The principle depends upon multiple factors such as ingestion, physical activity, digestive activities, kidney functions, and medications. Hence, option (a) is correct.

Explanation for the incorrect answer:

Option (b) states that the body maintains a stable mass at all times. The principle of mass balance states that the amount of material gained by the body is equal to the amount of material lost by the body. The principle does not state that the body maintains a stable mass at all times. So, it is an incorrect option.

Option (c) states that the amount of each variable brought into the body must be balanced by all other variables. The principle of mass balance states that the amount of variable gained by the body is equal to the amount of variable lost by the human body. The amount of each variable brought into the body cannot be balanced by all other variables. So, it is an incorrect option.

Option (d) states that the amount of a variable ingested is regulated by a positive feedback loop. The principle of mass balance does not state that the amount of variable ingested is regulated by a positive feedback loop. So, it is an incorrect option.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

Therefore, it can be concluded the amount of a variable that is gained by the body through ingestion equals the amount that is lost from the body is the best description of the principle of mass balance. Water is the only body fluid, which follows this principle.

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Chapter 25 Solutions

HUMAN ANAT&PHYS&MOD MA&P/ET&PHOTO ATLAS

Ch. 25.2 - Prob. 5QCCh. 25.2 - Prob. 6QCCh. 25.2 - Prob. 7QCCh. 25.2 - How is thirst stimulated?Ch. 25.2 - How are fluids lost from the body?Ch. 25.2 - 10. What are the water requirements for an...Ch. 25.2 - 11. What is the role of ADH in fluid balance? Ch. 25.2 - How is ADH secretion stimulated?Ch. 25.2 - How does dehydration affect the volume of the...Ch. 25.2 - Prob. 14QCCh. 25.2 - 15. How do dehydration and overhydration differ...Ch. 25.3 - What are the main roles of sodium ions in the...Ch. 25.3 - How is sodium ion concentration regulated?Ch. 25.3 - Prob. 3QCCh. 25.3 - Prob. 4QCCh. 25.3 - 5. How is the concentration of potassium ions in...Ch. 25.3 - 6. What happens to the resting membrane potential...Ch. 25.3 - Prob. 7QCCh. 25.3 - Prob. 8QCCh. 25.3 - Prob. 9QCCh. 25.3 - Prob. 10QCCh. 25.3 - 11. How is chloride ion reabsorption in the...Ch. 25.3 - 12. How is the concentration of magnesium ions in...Ch. 25.4 - What are the major sources of acids for the body?Ch. 25.4 - Prob. 2QCCh. 25.4 - Prob. 3QCCh. 25.4 - Prob. 4QCCh. 25.4 - Prob. 5QCCh. 25.4 - Prob. 6QCCh. 25.4 - Prob. 7QCCh. 25.4 - Prob. 8QCCh. 25.4 - How do metabolic acidosis and respiratory acidosis...Ch. 25.4 - Prob. 10QCCh. 25.4 - Prob. 11QCCh. 25.5 - Prob. 1QCCh. 25.5 - Prob. 2QCCh. 25 - Prob. 1CYRCh. 25 - 2. How does an electrolyte differ from a...Ch. 25 - Prob. 3CYRCh. 25 - Prob. 4CYRCh. 25 - Prob. 5CYRCh. 25 - Prob. 6CYRCh. 25 - Which of the following is false with respect to...Ch. 25 - Prob. 8CYRCh. 25 - Prob. 9CYRCh. 25 - Prob. 10CYRCh. 25 - Prob. 11CYRCh. 25 - Prob. 12CYRCh. 25 - Prob. 13CYRCh. 25 - Prob. 14CYRCh. 25 - 15. Which of the following mechanisms is/are used...Ch. 25 - Mark the following statements as true or false. If...Ch. 25 - Prob. 17CYRCh. 25 - 18. How does angiotensin-II help to restore fluid...Ch. 25 - Prob. 1CYUCh. 25 - Prob. 2CYUCh. 25 - Prob. 3CYUCh. 25 - Prob. 4CYUCh. 25 - Prob. 1AYKACh. 25 - Prob. 2AYKACh. 25 - Prob. 3AYKACh. 25 - Prob. 4AYKACh. 25 - Prob. 5AYKB
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