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What is the effect of secretion of ANS?

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in Biology – Class 11 by (272k points)
What is the effect of secretion of ANS?

(a) Increases urination frequency

(b) Constricts blood vessels

(c) Dilates blood vessels

(d) Decreases urination frequency

This question was posed to me by my school principal while I was bunking the class.

This question is from Chemical Control and Coordination in portion Chemical Control and Coordination of Biology – Class 11

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The correct choice is (c) Dilates blood vessels

Explanation: ANS or atrial natriuretic factor is secreted by the walls of the atria of the heart. Its effect is to dilate the blood vessels. As a result, blood is provided more space to flow, and hence the blood pressure decreases.

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