Question

Arrange the following steps in the renin-angiotensin mechanism to increase blood pressure (BP) in the correct sequence:

1) ACE from cells in the lungs converts angiotensin I to angiotensin II
2) Renin converts angiotensinogen from liver to angiotensin I
3) Angiotensin II causes vasoconstriction & stimulates aldosterone production which causes water retention and rise in BP
4) Low blood pressure or low sodium level causes secretion of renin from kidney cells
a. 1, 2, 3, 4
b. 4, 1, 3, 2
c. 4, 2, 1, 3
d. 2, 1, 3, 4

Answer 1

The correct sequence of steps in the renin-angiotensin mechanism to increase blood pressure is 4, 2, 1, 3. It starts with the secretion of renin, followed by the conversion of angiotensinogen to angiotensin I. ACE then converts angiotensin I to angiotensin II, leading to vasoconstriction and aldosterone production.

Step-by-step explanation:

The correct sequence of steps in the renin-angiotensin mechanism to increase blood pressure is 4, 2, 1, 3. First, low blood pressure or low sodium level causes the secretion of renin from kidney cells. Renin then converts angiotensinogen from the liver to angiotensin I. Next, ACE from cells in the lungs converts angiotensin I to angiotensin II. Finally, angiotensin II causes vasoconstriction and stimulates aldosterone production, which causes water retention and a rise in blood pressure.

The correct sequence of the renin-angiotensin mechanism to increase blood pressure is low blood pressure leading to renin secretion, renin converting angiotensinogen to angiotensin I, ACE converting angiotensin I to angiotensin II, and angiotensin II causing vasoconstriction and aldosterone production.

The correct sequence for the steps in the renin-angiotensin mechanism to increase blood pressure is The correct option, based on the given sequences, is 'c. 4, 2, 1, 3'