EasyNEET TEST
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Which of the following events acts as a direct check on the Renin-Angiotensin mechanism?
A
Conversion of Angiotensin I to Angiotensin II.
B
Secretion of Aldosterone.
C
Release of ANF from the atria of the heart.
D
Increased release of antidiuretic hormone.
Explanation
An increase in blood flow to the atria of the heart triggers the release of Atrial Natriuretic Factor (ANF). ANF causes vasodilation (dilation of blood vessels) and thereby decreases blood pressure, thus acting as a counter-regulatory check on the Renin-Angiotensin mechanism.
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