Aldosterone acts at:: (A) Collecting duct, (B) Glomerulus, (C) Proximal convoluted tubule, (D) Loop of Henle
Answer is A. Ans. A Collecting ductRef: Ganong, 23rd ed. pg. 648* Aldosterone is secreted from adrenal cortex.* Action of aldosterone is localized to distal tubule are collecting duct.* Mechanism: Stimulates Na+K+ ATPase at basolateral end which generate gradient for movement of sodium ion from apical membrane causing an increase in sodium: reabsorption.