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A secretion that is produced by an endocrine gland and discharged directly into the bloodstream; a hormone.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Physiology) physiol a secretion, esp a hormone, that is absorbed directly into the blood
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|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 effect|
secretion - a functionally specialized substance (especially one that is not a waste) released from a gland or cell
ACTH, adrenocorticotrophic hormone, adrenocorticotrophin, adrenocorticotropic hormone, adrenocorticotropin, corticotrophin, corticotropin - a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex
Adrenalin, adrenaline, epinephrin, epinephrine - a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
glucagon - a hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin)
gonadotrophic hormone, gonadotrophin, gonadotropic hormone, gonadotropin - hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity
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
hypothalamic releasing factor, hypothalamic releasing hormone, releasing factor, releasing hormone, RH - any of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormones; each of these hormones causes the anterior pituitary to secrete a specific hormone
growth hormone, human growth hormone, somatotrophic hormone, somatotrophin, somatotropic hormone, somatotropin, STH - a hormone produced by the anterior pituitary gland; promotes growth in humans
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
sex hormone, steroid hormone, steroid - any hormone affecting the development and growth of sex organs
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
melanocyte-stimulating hormone, MSH - a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytes
thyroid-stimulating hormone, thyrotrophic hormone, thyrotrophin, thyrotropic hormone, thyrotropin, TSH - anterior pituitary hormone that stimulates the function of the thyroid gland
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