Angiotensin II causes all except: (A) Stimulates release of ADH, (B) Increases thirst, (C) Vasodilation, (D) Stimulates aldosterone release
Answer is C. Ans. (C) Vasodilation(Ref: Ganong Review of Medical Physiology 22nd; KDT 8th/e p525)*Angiotensin II binds to AT1 receptors and causes vasoconstriction and release of aldosterone.*Angiotensin II is one of the most potent vasoconstrictors in body.*Angiotensin II increases thirst sensation through the subfornical organ (SFO) of the brain.*It increases secretion of ATCH in the anterior pituitary.*It also potentiates the release of norepinephrine by direct action on postganglionic sympathetic fibers.