Which of these statements is the best description of 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 is a hormone that plays a crucial role in regulating sodium and water balance in the body. One of its main actions is to stimulate aldosterone secretion, which leads to increased reabsorption of sodium in the kidneys. This helps to maintain blood volume and blood pressure within a normal range. Therefore, choice A is the best description of the role of angiotensin II. Choices B and D are incorrect as angiotensin II does not have a direct effect on the thirst centre or vasopressin secretion. Choice C is partly correct, but it is not the main trigger for the activation of angiotensin II.

Which of These Statements Is the Best Description of the Role