Definition for Antidiuretic hormone
From Biology Forums Dictionary
Antidiuretic hormone is a peptide hormone that controls the reabsorption of molecules in the tubules of the kidneys by affecting the tissue's permeability. It plays a key role in homeostasis, and the regulation of water, glucose, and salts in the blood. It is derived from a preprohormone precursor that is synthesized in the Hypothalamus and stored in vesicles at the posterior pituitary. Most of it is stored in the posterior pituitary gland to be released into the bloodstream; however, some ADH is also released directly into the brain.