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Question

The function of renin is 


A
Stimulation of corpus luteum
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B
Vasodilation
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C
To reduce blood pressure
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D
Conversion of angiotensinogen to angiotensin-I
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Solution

The correct option is D Conversion of angiotensinogen to angiotensin-I
The function of renin is to convert angiotensinogen to angiotensin I and further to angiotensin II in response to fall in glomerular blood flow/glomerular blood pressure/GFR. Angiotensin II, being a powerful vasoconstrictor, increases the glomerular blood pressure and thereby GFR. It also activates adrenal cortex  to release aldosterone. Aldosterone causes reabsorption of $$Na^{+}$$ and water from distal parts of the tubule. This also leads to an increase in blood pressure and GFR.
So, the correct answer is 'Conversion of angiotensinogen to angiotensin-I'.

Biology

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