Antidiuretic hormone (ADH), or arginine vasopressin (AVP), is a peptide hormone produced by the hypothalamus, and stored in the posterior pituitary gland until the hypothalamus signals its release in response to a change in serum osmolarity or blood volume. ADH acts on the kidneys at the renal collecting duct, concentrating the urine by promoting the reabsorption of water and salt.
wikipedia.org dumped 2003-03-17 with terodump