Exertion of potassium is governed primarily by

Options

A. Potassium reabsorption in proximal convoluted tubule
B. potassium secretion in proximal convoluted tubule
C. potassium secretion in distal convoluted tubule
D. potassium reabsorption in distal convoluted tubule.

Answer

C

Explanation

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