Which of the following results in thirst?: (A) Cardiac failure, (B) Decreased plasma levels of angiotensin II, (C) Distension of the cardiac atria, (D) Distension of the stomach
Answer is A. 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.