Which of these events does NOT happen when there is excess Na⁺ in the body
A)The plasma volume is expanded, and arterial blood pressure is increased.
B)As a compensatory measure, the GFR is increased.
C)As a compensatory measure, aldosterone secretion is increased to increase the amount of Na⁺ reabsorbed.
D)More K⁺ is secreted by the renal tubules.

Question

Quizplus · Accepted Answer

When there is excess Na⁺ in the body, aldosterone secretion would actually decrease, not increase. Aldosterone promotes Na⁺ reabsorption (and thus water retention), which would be counterproductive in a situation where there is already too much Na⁺.

Which of These Events Does NOT Happen When There Is