Which of the following statements concerning potassium ions is false?
A. An increase in the extracellular potassium ion concentration leads to depolarization.
B. Potassium ions are secreted into the nephron by the distal convoluted tubule.
C. When aldosterone levels are high, potassium secretion is low.
D. Aldosterone secretion is stimulated by high blood levels of potassium ions.
E. None of these choices is false.
C
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