Which of the following substances is the predominant component of extracellular fluid?
a. saline c. proteins
b. potassium d. phosphate
A
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A Correct: Saline is the predominant component of extracellular fluid because it contains large amounts of sodium, chloride, and bicarbonate.
B Incorrect: Potassium is not the predominant component of extracellular fluid. It is the predominant component of intracellular fluid.
C Incorrect: Proteins are not the predominant component of extracellular fluid.
D Incorrect: Phosphate is not the predominant component of extracellular fluid.
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