Which of the following body systems is the quickest to respond to changes in pH in the blood?
Respiratory system
Muscular system
Integumentary system
Kidneys and Renal system
The Correct Answer is A
A. Respiratory system: It responds within minutes by adjusting CO₂ exhalation to regulate pH.
B. Muscular system: It doesn’t play a direct role in acid-base balance.
C. Integumentary system: The skin is not involved in pH regulation.
D. Kidneys and Renal system: Though effective, the renal response is slower, taking hours to days.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Is secreted when water intake is too low: ADH promotes water reabsorption by the kidneys when the body is dehydrated.
B. Increases bone formation: Bone formation is regulated by calcium and vitamin D, not ADH.
C. Regulates acid-base balance: The kidneys and lungs regulate acid-base balance, not ADH directly.
D. Stimulates the production of large amounts of urine: ADH reduces urine output by conserving water.
Correct Answer is C
Explanation
A. Produce more carbonic acid: Hyperventilation reduces carbonic acid levels, not increases it.
B. Retain carbon dioxide: Rapid breathing eliminates, not retains, CO₂.
C. Get rid of excess carbon dioxide: Hyperventilation is a compensatory mechanism to eliminate CO₂ and correct acidosis.
D. Lower the blood pH level: Removing CO₂ actually raises the blood pH.
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