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Exretion of potassium is governed primarly by
A. Potassium reabsorption in proximal convoluted tubule
B. potassium secretion in proximal convoluted tubule
C. potassium secretion in distal convoluted tubule
D. potassiu reabsorption in distal convoluted tubule.

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Correct Answer - C
Potassium is reabsorbed by active tranport in PCT. However, selective secretion fo hydrogen and potassium ions in DCT must influence the excretion of potassium.

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