Angiotensin I
A) is formed as a result of activation of angiotensinogen by renin
B) is transformed into angiotensin II as a result of converting enzyme action in the lungs
C) acts on the adrenal cortex to stimulate aldosterone secretion
D) is formed as a result of activation of angiotensinogen by renin, and is transformed into angiotensin II as a result of converting enzyme action in the lungs
E) all of these

Question

Quizplus · Accepted Answer

Angiotensin I is formed as a result of activation of angiotensinogen by renin, and it is then transformed into angiotensin II as a result of converting enzyme action in the lungs. Angiotensin II acts on the adrenal cortex to stimulate aldosterone secretion. Therefore, option D is the correct answer. Option A is partially correct, as it describes the formation of Angiotensin I, but it does not provide the full pathway. Option B is incorrect, as it describes the transformation of Angiotensin I into Angiotensin II, but it does not include the initial step. Option C is also partially correct, as it describes the action of Angiotensin II, but it does not include the formation of Angiotensin I.