The anion abundant in extracellular fluid and important for gastric acid formation is:
sodium
chloride
calcium
potassium
The Correct Answer is B
A. sodium: Sodium is the main extracellular cation, not an anion.
B. chloride: Chloride is the main extracellular anion and a component of hydrochloric acid in the stomach.
C. calcium: Calcium is a cation and not primarily associated with gastric acid formation.
D. potassium: Potassium is a major intracellular cation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. antidiuretic hormone: ADH regulates water balance, not calcium.
B. calcitonin: Calcitonin lowers blood calcium levels by inhibiting bone resorption.
C. aldosterone: Aldosterone helps regulate sodium and potassium, not calcium.
D. parathyroid hormone: PTH increases serum calcium by stimulating bone resorption and increasing renal reabsorption of calcium.
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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