Which of the following results in thirst?
Cardiac failure
Decreased plasma levels of angiotensin II
Distension of the cardiac atria
Distension of the stomach
Ans. A. Cardiac failurea. Cardiac failure results in a decrease in effective arterial blood volume, which stimulates thirst.b. Because angiotensin stimulates thirst, a low plasma level would have the opposite effect.c. Distension of the atria (increased blood volume) or stomach inhibits thirst. Volume expansion and a low plasma osmolality both inhibit thirst.
Heart, Circulation, and Blood