vasopressin -
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
hormone,
internal secretion,
endocrine the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
pressor,
vasoconstrictive,
vasoconstrictor any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
