<prompt> ADH is released from: March 2013Anterior pituitaryPosterior pituitaryHypothalamusIntermediate pituitary  <response>: Ans. B i.e. Posterior pituitaryArginine vasopressin AVPVasopressinArgipressinAntidiuretic hormone ADHIt is a neurohypophysial hormone.It is derived from a preprohormone precursor that is synthesized in the hypothalamus and stored in vesicles at theposterior pituitary.Its two primary functions are to retain water in the body and to constrict blood vessels.Vasopressin regulates the bodys retention of water by acting to increase water absorption in the collecting ducts of the kidney nephron 