Question:
When GFR decreases, lungs secrete ___________ in renin--angiotensin mechanism.
When GFR decreases, lungs secrete ___________ in renin--angiotensin mechanism.
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{ACE is secreted by lungs} in the RAAS pathway.
Updated On: Feb 4, 2026
- angiotensin II
- angiotensinogen
- renin
- angiotensin converting enzyme
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The Correct Option is D
Solution and Explanation
Step 1: Understanding RAAS mechanism.
A decrease in GFR activates the renin–angiotensin–aldosterone system (RAAS) to regulate blood pressure.
Step 2: Role of lungs.
Lungs secrete angiotensin converting enzyme (ACE), which converts angiotensin I into angiotensin II.
Step 3: Physiological effect.
Angiotensin II causes vasoconstriction and increases blood pressure, thereby restoring GFR.
A decrease in GFR activates the renin–angiotensin–aldosterone system (RAAS) to regulate blood pressure.
Step 2: Role of lungs.
Lungs secrete angiotensin converting enzyme (ACE), which converts angiotensin I into angiotensin II.
Step 3: Physiological effect.
Angiotensin II causes vasoconstriction and increases blood pressure, thereby restoring GFR.
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