Wednesday, November 12, 2025

sodium

CA State Northridge
Which of the following ions is most abundant in extracellular fluid?
Calcium is not the most abundant ion in extracellular fluid.
Chloride is not the most abundant ion in extracellular fluid.
MY ANSWER
Sodium is the most abundant ion in extracellular fluid.
Potassium is not the most abundant ion in extracellular fluid.

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