You have just finished a really long workout at the gym. You sweat quite a bit, and now feel thirsty. You have lost a lot of water and some ions while sweating. Decreased Na⁺ in body fluids (Na⁺ depletion) _____ renin secretion.

Question

Quizplus · Accepted Answer

Decreased Na⁺ in body fluids (Na⁺ depletion) triggers the renin-angiotensin-aldosterone system (RAAS) in the body, resulting in increased renin secretion. Renin is an enzyme that triggers a cascade of events leading to the production of angiotensin II, which stimulates aldosterone secretion from the adrenal gland. Aldosterone increases the reabsorption of sodium and water in the kidney and decreases their excretion, leading to an increase in blood volume and blood pressure. Therefore, the correct answer is A) increases.

You Have Just Finished a Really Long Workout at the Gym