The distribution of sodium and potassium ions between intracellular and extracellular compartments is
A. potassium mainly intracellular; sodium mainly in extracellular.
B. sodium mainly intracellular; potassium mainly in extracellular.
C. little of either intracellular but large amounts of both extracellular.
D. equal amounts of both ions, in both intracellular and extracellular fluids.
E. None of these choices is correct.
A
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