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Solution


Q.

A decrease in blood pressure/volume will not cause the release of            [2017]
1 atrial natriuretic factor  
2 aldosterone  
3 ADH  
4 renin  

Ans.

(1)

Atrial natriuretic factor (ANF) is responsible for lowering of blood pressure and volume. The walls of the atria of the heart release ANF in response to an increase in blood volume and pressure. It opposes regulation by RAAS. It inhibits release of renin from JGA thereby inhibiting NaCl reabsorption by the collecting duct and reduces aldosterone release from adrenal gland.