| Noun | 1. | internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effectsecretion - a functionally specialized substance (especially one that is not a waste) released from a gland or cell gastrin - polypeptide hormone secreted by the mucous lining of the stomach; induces the secretion of gastric juice ghrelin - a hormone produced by stomach cells; "ghrelin is thought to increase feelings of hunger" glucagon - a hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin) insulin - hormone secreted by the isles of Langerhans in the pancreas; regulates storage of glycogen in the liver and accelerates oxidation of sugar in cells melatonin - hormone secreted by the pineal gland neurohormone - a hormone that is released by nerve impulses (e.g., norepinephrine or vasopressin) oxytocin, Pitocin - hormone secreted by the posterior pituitary gland (trade name Pitocin); stimulates contractions of the uterus and ejection of milk parathormone, parathyroid hormone - hormone synthesized and released into the blood stream by the parathyroid glands; regulates phosphorus and calcium in the body and functions in neuromuscular excitation and blood clotting relaxin - hormone secreted by the corpus luteum during the last days of pregnancy; relaxes the pelvic ligaments and prepares the uterus for labor secretin - peptic hormone produced by the mucous lining of the small intestine; can stimulate secretion by the pancreas and liver thymosin - hormone secreted by the thymus; stimulates immunological activity of lymphoid tissue thyroid hormone - any of several closely related compounds that are produced by the thyroid gland and are active metabolically ADH, antidiuretic hormone, Pitressin, 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 adrenosterone - a steroid having androgenic activity; obtained from the cortex of the adrenal gland glucocorticoid - a steroid hormone that is produced by the adrenal cortex of animals; affects functioning of gonads and has anti-inflammatory activity catecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland | |