Which statement most accurately describes the role of angiotensin II? A) It increases Na⁺ reabsorption by stimulating aldosterone secretion. B) It suppresses the thirst centre at the brain. C) It is activated when ECF volume and arterial blood pressure are increased. D) It decreases Na⁺ reabsorption by inhibiting the secretion of vasopressin.

Question

Quizplus · Accepted Answer

Angiotensin II increases Na⁺ reabsorption by stimulating aldosterone secretion, thereby promoting sodium retention and increasing blood volume and blood pressure. Options B and D are incorrect as angiotensin II does not affect the thirst centre or the secretion of vasopressin. Option C is partially correct but not the most accurate as angiotensin II is also activated by other factors, such as sympathetic nervous system activation and decreased renal perfusion pressure.

Which Statement Most Accurately Describes the Role of Angiotensin II