Vasopressin acts through which channels in collecting duct?: (A) Aquaporin 1, (B) Aquaporin 2, (C) GLUT-1, (D) GLUT-4
Answer is B. Ans. B. Aquaporin 2a. Principal cells of collecting duct contain a regulated system of water channels antidiuretic hormone (ADH, also called arginine vasopressin, AVP).b. ADH controls permeability of these cells to water by regulating insertion of pre-formed water channels (aquaporin-2, AQP2) into apical membrane.