Which of the following are major extracellular electrolytes? 1. Cl– 2. HCO3– 3. K+ 4. Na+
a. 1, 2, and 3 only
b. 2, 3, and 4 only
c. 1, 3, and 4 only
d. 1, 2, and 4 only
ANS: D
Sodium (Na+), chloride (Cl−), and bicarbonate (HCO3−) are the predominant extracellular elec-trolytes.
Health Professions
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