Which of the following acts as a countercheck on renin-angiotensin mechanism?

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ANF

PTH

FSH

ADH

answer is B.

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Detailed Solution

An increase in blood flow to the atria of the heart can cause the release of Atrial Natriuretic Factor (ANF). ANF can cause vasodilation (dilation of blood vessels) and thereby decrease the blood pressure. Renin-Angiotensin mechanism increases blood pressure. Thus, ANF mechanism acts as a check on the renin-angiotensin mechanism.

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