The most abundant electrolyte in the body is:
calcium
magnesium
sodium
potassium
The Correct Answer is A
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 430 ml: This doesn’t include all oral items.
B. 450 ml: Juice (120) + cereal (180) + tea (150) = 450 ml total oral intake.
C. 300 ml: Underestimates total oral intake.
D. 1500 ml: This may include IV fluid, which isn’t oral intake.
Correct Answer is C
Explanation
A. encourage intake of oral liquids: This helps increase intake but doesn’t measure balance.
B. check electrolyte laboratory values: Helpful, but not a direct measurement of fluid volume.
C. compare weight from day to day: Daily weights are a reliable method to assess changes in fluid volume status.
D. determine acid-base status: Acid-base status evaluates pH balance, not fluid volume directly.
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