Inside the cell, the substance, which contributes to most of the osmolality, is________________?
Correct answer: A. Potassium
- A. Potassium
- B. Protein
- C. Urea
- D. Phosphate
Explanation
Potassium is the principal intracellular cation and, with its accompanying anions, contributes greatly to intracellular osmolality. Sodium is the corresponding major contributor in extracellular fluid.
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