Secretion of potassium into the urine is
A)increased by ADH.
B)associated with the reabsorption of sodium from the distal tubules and collecting ducts.
C)minimal because the human diet includes very little potassium.
D)an indication of dehydration.
E)All of the answers are correct.

Question

Quizplus · Accepted Answer

The secretion of potassium into the urine is associated with the reabsorption of sodium from the distal tubules and collecting ducts. This process is regulated by aldosterone, which promotes the reabsorption of sodium in exchange for the secretion of potassium. ADH does not directly affect potassium secretion, but it can indirectly affect it by regulating the water balance and therefore the concentration of potassium in the urine. The human diet typically contains sufficient amounts of potassium, so minimal secretion of potassium into the urine is not due to a lack of dietary intake. Potassium secretion into the urine is not necessarily an indication of dehydration, as it can occur even when the body is adequately hydrated.

Secretion of Potassium into the Urine Is