Which of the following mechanism involves the vasodilation?
A
ADH
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B
Renin-angiotensin
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C
ANF
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D
None of the above
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Solution
The correct option is C Renin-angiotensin ANF(Atrial natriuretic factor) is a protein hormone which is secreted by the atrial wall in response to the high blood volume and high blood pressure into the circulatory blood. ANF causes vasodilation (dilation of blood vessels) and thereby decrease the blood pressure. ANF mechanism, therefore, acts as a check on the renin-angiotensin mechanism.