Question
ANF opposes RAAS, Explain.
Solution
ANF is released by walls of atria or auricles. ANF (Atrial Natiuretic Factor) is secreted in response to increase of B.P. or blood volume.
ANF checks the secretion of renin-angitensin mechanism, and thus inhibits reabsorption of NaCl by collecting duct and also stops release of aldosterone. ANF is a vasodilator whereas the Angiotensin II is a vasocontrictor.
