ANTIDIURETIC HORMONE

WordNet Dictionary

	Definition:	[n] hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules

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	Synonyms:	ADH, Pitressin, vasopressin

	See Also:	hormone, internal secretion, vasoconstrictive, vasoconstrictor

Biology Dictionary

	Definition:	A peptide hormone that increases blood pressure and the rate at which the kidneys absorb water, and is therefore used as an antidiuretic. It is secreted by the hypothalamus and stored in/released by the posterior pituitary gland.