The largest percentage of total body water in an adult is located in which fluid compartment?
intravascular
extracellular
intracellular
interstitial
The Correct Answer is C
A. intravascular: This compartment contains only about 5% of body fluid.
B. extracellular: Although significant, it accounts for only about one-third of total body water.
C. intracellular: The intracellular fluid compartment contains about two-thirds of the body’s water.
D. interstitial: Part of the extracellular fluid but only about 15% of total body water.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
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.
Correct Answer is A
Explanation
A. Calcium: Calcium is the most abundant electrolyte, primarily stored in bones and teeth.
B. Magnesium: Magnesium is important but less abundant than calcium.
C. Sodium: Sodium is the most abundant extracellular cation but not the most abundant overall.
D. Potassium: Potassium is the most abundant intracellular cation but calcium exceeds it body-wide.
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