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hormone
hor·mone H0277600 (hôr′mōn′)n.1. a. A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism.b. A synthetic compound that acts like a hormone in the body.2. Any of various similar substances found in plants and insects that regulate development.
[From Greek hormōn, present participle of hormān, to urge on, from hormē, impulse; see er- in Indo-European roots.]
hor·mon′al (-mō′nəl), hor·mon′ic (-mŏn′ĭk) adj.hor·mon′al·ly adv.hormone (ˈhɔːməʊn) n1. (Biochemistry) a chemical substance produced in an endocrine gland and transported in the blood to a certain tissue, on which it exerts a specific effect2. (Biochemistry) an organic compound produced by a plant that is essential for growth3. (Biochemistry) any synthetic substance having the same effects[C20: from Greek hormōn, from horman to stir up, urge on, from hormē impulse, assault] horˈmonal, hormonic adj horˈmonally adv ˈhormoneˌlike adjhor•mone (ˈhɔr moʊn)
n. 1. any of various internally secreted compounds formed in endocrine glands that affect the functions of specifically receptive organs or tissues when transported to them by the body fluids. 2. a synthetic substance that acts like such a compound when introduced into the body. 3. any of various plant compounds, as auxin or gibberellin, that control growth and differentiation of plant tissue. [1900–05; < Greek hormôn, present participle of hormân to set in motion, stimulate, derivative of hormḗ impetus, impulse] hor•mo′nal, hor•mon•ic (-ˈmɒn ɪk, -ˈmoʊ nɪk) adj. hor·mone (hôr′mōn′) A substance produced in one part of the body, especially in an endocrine gland, that has an effect on another part of the body, to which it is usually carried in the bloodstream. Hormones regulate many biological processes, including growth and metabolism.Did You Know? On the inside, humans are bathing in a sea of hormones, chemical compounds that regulate many essential activities in the body. A lot of hormones are produced in glands known as endocrine glands, such as the thyroid gland, pancreas, and ovaries, and travel from there through the bloodstream before arriving at their target sites of action. Specialized cells of the nervous system also produce hormones. Hormones are not found only in humans, but also in all other animals and plants. The variety of different functions hormones have is astounding. Insulin, secreted by the pancreas, regulates the absorption of sugars in the body. Thyroid hormones regulate the rate of cell metabolism and affect many other processes, including reproduction. Growth hormone, secreted by the pituitary gland, controls growth of the body. Estrogen and testosterone control sexual development. Some of the hormones released in the brain, known as endorphins, act as natural painkillers. When the amounts of these or other hormones are abnormal, disease can result. Too little insulin causes diabetes, too little estrogen weakens the bones of older women, and too much growth hormone causes people to grow without stopping. Fortunately, these diseases can usually be treated, either with hormones made artificially in laboratories or by operating on the affected gland.hormoneA chemical messenger that is produced in one part of an organism and acts in another part.Thesaurus| Noun | 1. |  hormone - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effectendocrine, internal secretionsecretion - a functionally specialized substance (especially one that is not a waste) released from a gland or cellACTH, adrenocorticotrophic hormone, adrenocorticotrophin, adrenocorticotropic hormone, adrenocorticotropin, corticotrophin, corticotropin - a hormone produced by the anterior pituitary gland that stimulates the adrenal cortexAdrenalin, adrenaline, epinephrin, epinephrine - a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve actiongastrointestinal hormone, GI hormones - hormones that affect gastrointestinal functioningglucagon - 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 activityinsulin - hormone secreted by the isles of Langerhans in the pancreas; regulates storage of glycogen in the liver and accelerates oxidation of sugar in cellsmelatonin - hormone secreted by the pineal glandneurohormone - 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 milkparathormone, 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 clottingrelaxin - hormone secreted by the corpus luteum during the last days of pregnancy; relaxes the pelvic ligaments and prepares the uterus for laborhypothalamic 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 hormonegrowth hormone, human growth hormone, somatotrophic hormone, somatotrophin, somatotropic hormone, somatotropin, STH - a hormone produced by the anterior pituitary gland; promotes growth in humansthymosin - hormone secreted by the thymus; stimulates immunological activity of lymphoid tissuethyroid hormone - any of several closely related compounds that are produced by the thyroid gland and are active metabolicallyADH, 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 tubulessex hormone, steroid hormone, steroid - any hormone affecting the development and growth of sex organsadrenosterone - a steroid having androgenic activity; obtained from the cortex of the adrenal glandglucocorticoid - a steroid hormone that is produced by the adrenal cortex of animals; affects functioning of gonads and has anti-inflammatory activitycatecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal glandmelanocyte-stimulating hormone, MSH - a hormone secreted by the anterior pituitary gland that controls the degree of pigmentation in melanocytesthyroid-stimulating hormone, thyrotrophic hormone, thyrotrophin, thyrotropic hormone, thyrotropin, TSH - anterior pituitary hormone that stimulates the function of the thyroid glandprotirelin, thyrotropin-releasing factor, thyrotropin-releasing hormone, TRF, TRH - hormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitary |
hormoneHormones adrenaline or epinephrine, adrenocorticotrophic hormone, androsterone, antidiuretic hormone, bursicon, calcitonin, cholecystokinin or pancreozymin, chorionic gonadotrophin, corpus luteum hormone or progesterone, corticosteroid, corticosterone or adrenocorticotrophic hormone, cortisone, deoxycorticosterone, ecdysone, enterogastrone, erythropoietin, florigen, follicle-stimulating hormone, glucagon, gibberellic acid, gastrin, gonadotrophin, growth hormone or somatotrophin, insulin, interstitial-cell-stimulating hormone or luteinizing hormone, juvenile hormone, lactogenic hormone, luteinizing hormone-releasing hormone, luteotrophin or prolactin, noradrenaline, oestradiol, oestriol, oestrone, oxytocin, progesterone, parathyroid hormone, relaxin, secretin, sex hormone, somatomedin, somatostatin, stilboestrol, testosterone, thyroid-stimulating hormone or thyrotropin, thyroxine, trichlorophenoxyacetic acid, triiodothyronine, vasopressinTranslationshormone (ˈhoːməun) noun a substance produced by certain glands of the body, which makes some organ of the body active. Adrenalin is a hormone. 荷爾蒙, 激素 荷尔蒙，激素 IdiomsSeehormone therapySee hormone
See hormoneHormone
hormone [hor´mōn] a chemical transmitter substance produced by cells of the body and transported by the bloodstream to the cells and organs on which it has a specific regulatory effect. adj., adj hormo´nal. Hormones act as chemical messengers to body organs, stimulating certain life processes and retarding others. Growth, reproduction, control of metabolic processes, sexual attributes, and even mental conditions and personality traits are dependent on hormones.
Hormones are produced by various organs and body tissues, but mainly by the endocrine glands, such as the pituitary, thyroid, and gonads (testes and ovaries). Each gland apparently synthesizes several kinds of hormones; the adrenal glands alone produce more than 25 varieties. The total number of hormones is still unknown, but each has its unique function and its own chemical formula. After a hormone is discharged by its parent gland into the capillaries or the lymph, it may travel a circuitous path through the bloodstream to exert influence on cells, tissues, and organs (target organs) far removed from its site of origin.
One of the best-known endocrine hormones is insulin, a protein manufactured by the beta cells of the islands of Langerhans in the pancreas that is important in carbohydrate metabolism. Other important hormones are thyroxine, an iodine-carrying amino acid produced by the thyroid gland; cortisone, a member of the steroid family from the adrenal glands; and the sex hormones, estrogen from the ovaries and androgen from the testes. Certain hormone substances can be synthesized in the laboratory for treatment of human disease. Animal hormones can also be used, as endocrine hormones are to some extent interchangeable among species. Extracts from the pancreas of cattle, for example, enabled diabetes sufferers to live normal lives even before the chemistry of insulin was fully understood.
Endocrine hormone synthesis and secretion is controlled and regulated by a closed-loop system. Negative feedback loops maintain optimal levels of each hormone in the body. If there are abnormally high levels of a hormone in the blood, feedback to the gland responsible for its production inhibits secretion. If there are abnormally low levels, the gland is stimulated to step up production and secretion. In this way a homeostatic balance is maintained. (See also endocrine glands.)adrenocortical hormone 1. any of the corticosteroids secreted by the adrenal cortex, the major ones being the glucocorticoids and mineralocorticoids, and including some androgens, progesterone, and estrogens.2. corticosteroid.adrenocorticotropic hormone (ACTH) corticotropin.adrenomedullary h's substances secreted by the adrenal medulla, including epinephrine and norepinephrine.androgenic hormone androgen.anterior pituitary hormone any of the protein or polypeptide hormones secreted by the anterior lobe of the pituitary gland" >pituitary gland, including growth hormone, thyrotropin, prolactin, follicle-stimulating hormone, luteinizing hormone, melanocyte-stimulating hormone, and corticotropin.antidiuretic hormone (ADH) vasopressin.corpus luteum hormone progesterone.cortical hormone corticosteroid.corticotropin-releasing hormone (CRH) a neuropeptide secreted by the median eminence of the hypothalamus that binds to specific receptors on the corticotroph cells of the anterior pituitary and stimulates the secretion of corticotropin.ectopic h's those secreted by tumors of nonendocrine tissues but having the same physiologic effects as their normally produced counterparts. It is not known exactly how the synthesis and secretion of endocrine hormones from nonendocrine tissues occurs. Most of these tumors are derived from tissues that have a common embryonic origin with endocrine tissues. When the cells undergo neoplastic transformation, they can revert to a more primitive stage of development and begin to synthesize hormones.
Ectopic hormones present serious problems for patients and add to the complexity of caring for those with certain kinds of neoplastic diseases. These hormones do not respond to the feedback mechanisms that regulate normal hormonal production; hence, surgery and destruction of the tumorous tissue by radiation and chemotherapy are the treatments of choice.estrogenic hormone estrogen.follicle-stimulating hormone (FSH) one of the gonadotropins of the anterior pituitary, which stimulates the growth and maturity of graafian follicles in the ovary, and stimulates spermatogenesis in the male.follicle-stimulating hormone and luteinizing hormone–releasing hormone (FSH/LH-RH) luteinizing hormone–releasing hormone.follicle-stimulating hormone–releasing hormone (FSH-RH) luteinizing hormone–releasing hormone.gonadotropic hormone gonadotropin.gonadotropin-releasing hormone (Gn-RH) luteinizing hormone–releasing hormone.growth hormone (GH) any of several related polypeptide hormones secreted by the anterior lobe of the pituitary gland that directly influence protein, carbohydrate, and lipid metabolism and control the rate of skeletal and visceral growth; their secretion is in part controlled by the hypothalamus. It is used pharmaceutically as somatrem and somatropin. Called also somatotrophin, somatotropin, and somatotrophic or somatotropic hormone.growth hormone release–inhibiting hormone somatostatin.growth hormone–releasing hormone (GH-RH) a neuropeptide elaborated by the median eminence of the hypothalamus that binds to specific receptors on the somatotroph cells of the anterior pituitary and stimulates the secretion of growth hormone.interstitial cell–stimulating hormone luteinizing hormone.lactation hormone (lactogenic hormone) prolactin.local hormone a substance with hormone like properties that acts at an anatomically restricted site; most are rapidly degraded. Called also autacoid and autocoid.luteinizing hormone (LH) a gonadotropin of the anterior pituitary gland, acting with follicle-stimulating hormone to cause ovulation of mature follicles and secretion of estrogen by thecal and granulosa cells of the ovary; it is also concerned with corpus luteum formation. In the male, it stimulates development of the interstitial cells of the testes and their secretion of testosterone. Called also interstitial cell–stimulating hormone.luteinizing hormone–releasing hormone (LH-RH) a decapeptide hormone of the hypothalamus, which stimulates the release of follicle-stimulating hormone and luteinizing hormone from the pituitary gland; it can be used in the differential diagnosis of hypothalamic, pituitary, and gonadal dysfunction. Called also follicle-stimulating hormone–releasing hormone, follicle-stimulating hormone and luteinizing hormone–releasing hormone, and gonadotropin-releasing hormone.melanocyte-stimulating hormone (MSH) a substance from the anterior pituitary gland of certain other animals but not humans; it influences the formation or deposition of melanin in the body and pigmentation of the skin.neurohypophyseal h's those stored and released by the neurohypophysis, i.e., oxytocin and vasopressin.parathyroid hormone (PTH) a polypeptide hormone secreted by the parathyroid glands that influences calcium and phosphorus metabolism and bone formation.placental h's hormones secreted by the placenta, including chorionic gonadotropin, and other substances having estrogenic, progestational, or adrenocorticoid activity.progestational hormone 1. progesterone.2. progestational agent.prolactin-inhibiting hormone a hormone released by the hypothalamus that inhibits the secretion of prolactin by the anterior pituitary gland.prolactin-releasing hormone any of various hormones elaborated by the hypothalamus that stimulate the release of prolactin by the anterior pituitary gland. Most such activity is exerted by vasoactive intestinal polypeptide, although in humans hormone" >thyrotropin-releasing hormone can also have this action. sex h's see sex hormones.somatotrophic hormone (somatotropic hormone) growth hormone.somatotropin release–inhibiting hormone somatostatin.somatotropin-releasing hormone (SRH) growth hormone–releasing hormone.steroid h's hormones that are biologically active steroids; they are secreted by the cortex" >adrenal cortex, testis, ovary, and placenta and include the progestational agents, glucocorticoids, mineralocorticoids, androgens, and estrogens. They act by binding to specific receptors to form complexes, which then enhance or inhibit the expression of specific genes.thyroid h's see thyroid hormones.thyroid-stimulating hormone (TSH) thyrotropin.thyrotropin-releasing hormone (TRH) a tripeptide hormone of the hypothalamus, which stimulates release of thyrotropin from the pituitary gland. In humans, it also acts as a prolactinreleasing factor. It is used in the diagnosis of mild hyperthyroidism and Graves disease, and in differentiating between primary, secondary, and tertiary hypothyroidism.hor·mone (hōr'mōn), A chemical substance, formed in one organ or part of the body and carried in the blood to another organ or part where they exert functional effects; depending on the specificity of their effects, hormones can alter the functional activity, and sometimes the structure, of just one organ or tissue or various numbers of them. Various hormones are formed by ductless glands, but molecules such as secretin, cholecystokinin/somatostatin, formed in the gastrointestinal tract, by definition are also hormones. The definition of hormone has been recently extended to chemical substances formed by cells and acting on neighboring cells (that is, paracrine function) or the same cells that produce them (that is, autocrine function). For hormones not listed below, see specific names. [G. hormōn, pres. part. of hormaō, to rouse or set in motion] hormone (hôr′mōn′)n.1. a. A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism.b. A synthetic compound that acts like a hormone in the body.2. Any of various similar substances found in plants and insects that regulate development.
hor·mon′al (-mō′nəl), hor·mon′ic (-mŏn′ĭk) adj.hor·mon′al·ly adv.hormone A biomolecule released by a cell or gland that transfers information and instructions from one group of cells to another.hormone adjective Referring to a hormone, hormonal noun Endocrinology A chemical messenger produced in an endocrine gland and released into the circulation to effect a change in a specific target organ; hormones regulate the internal environment, effecting homeostatic control, regulate reproductive processes, and affect mood and behavior Types Steroid hormones–cortisol, estrogen, testosterone; nonsteroid hormones–choleckystokinin, epinephrine, dopamine, insulin, norepinephrine, serotonin, vasopressin. See ACTH, Beef growth hormone, Biological thyroid hormone, Candidate hormone, Designer hormone, Ectopic hormone, Emasculated hormone, Fat mobilizing hormone, FSH, Gonadotropin-releasing hormone, Growth hormone, HCG, LH, LH-RH, Melanocyte-stimulating hormone, Neurohormone, Pheromone, PTH, Somatotropin release-inhibiting hormone, Thyrotropin releasing hormone, TSH. Cf Neurotransmitter. hor·mone (hōr'mōn) A chemical substance formed in a tissue or organ and carried in the blood; stimulates or inhibits the growth or function of one or more other tissues or organs. [G. hormōn, pres. part. of hormaō, to rouse or set in motion]hormone a chemical that is produced in the body of a plant or animal, sometimes in very small quantities, and which, when transported (usually by the blood stream in animals) to the target site in another part of the organism, elicits a particular response. In animals the ductless glands that secrete hormones are called ENDOCRINE ORGANS. Animal hormones that influence other endocrine glands are called trophins (or tropins) - for example, GONADOTROPHINS. PLANT HORMONES are usually called growth substances.HormoneHormones are chemicals that are produced in an organ or gland and then are carried by the blood to another part of the body where they produce a special effect for which they were designed.Mentioned in: Acromegaly and Gigantism, Addison's Disease, Anabolic Steroid Use, Antidiabetic Drugs, Bone Disorder Drugs, Cholesterol-Reducing Drugs, Congenital Adrenal Hyperplasia, Corticosteroids, Cushing's Syndrome, Norplant, Drugs Used in Labor, Dysmenorrhea, Hormone Replacement Therapy, Human Chorionic Gonadotropin Pregnancy Test, Hypercalcemia, Hypophysectomy, IUD, Jet Lag, Kidney Disease, Menopause, Neuroblastoma, Oral Contraceptives, Pancreatitis, Pituitary Dwarfism, Puberty, Thyroid Hormoneshor·mone (hōr'mōn) A chemical substance, formed in one organ or part of the body and carried in the blood to another organ or part where it produces functional effects; depending on the specificity of their effects, hormones can alter the functional activity, and sometimes the structure, of just one organ or tissue or various numbers of them. [G. hormōn, pres. part. of hormaō, to rouse or set in motion]Patient discussion about HormoneQ. does the growth hormone have side effects and what are they? A. Yes, it does, and not a few. They include, among others, pain in the joints, carpal tunnel syndrome, diabetes, pain at the injection site, problems with the thyroid gland, ear problems and many others. You may read more about side effects of growth hormone treatment (called Mecasermin or Somatropin) here: http://www.drugs.com/ppa/mecasermin.html Q. what is the effect of hormones during pregnancy on a woman's temper? A. Hormonal changes during pregnancy can indeedn cause mood changes, starting from anxiety or agitations to developing major clinical symptoms of depression. Pregnancy affects each woman differently. Q. What types of hormonal changes caused by fibromyalgia? Fibromyalgia affects hormones because I feel pain in my back bone. What types of hormonal changes caused by fibromyalgia?A. Have you ever checked your back pain with a doctor? It may or may not be due to fibromyalgia. Low serotonin levels, low growth hormone levels, and low levels of neuropeptide Y, a component of the feel-good hormone neurotransmitter norepinephrine have been associated with fibromyalgia. Elevated levels of substance P acts as a neurotransmitter and signals the body to experience pain. These pains have also been observed in the spinal cord of fibromyalgia patients. More discussions about HormoneFinancialSeeGHhormone
Related to hormone: plant hormone, growth hormone, thyroid hormoneSynonyms for hormonenoun the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effectSynonyms- endocrine
- internal secretion
Related Words- secretion
- ACTH
- adrenocorticotrophic hormone
- adrenocorticotrophin
- adrenocorticotropic hormone
- adrenocorticotropin
- corticotrophin
- corticotropin
- Adrenalin
- adrenaline
- epinephrin
- epinephrine
- gastrointestinal hormone
- GI hormones
- glucagon
- gonadotrophic hormone
- gonadotrophin
- gonadotropic hormone
- gonadotropin
- insulin
- melatonin
- neurohormone
- oxytocin
- Pitocin
- parathormone
- parathyroid hormone
- relaxin
- hypothalamic releasing factor
- hypothalamic releasing hormone
- releasing factor
- releasing hormone
- RH
- growth hormone
- human growth hormone
- somatotrophic hormone
- somatotrophin
- somatotropic hormone
- somatotropin
- STH
- thymosin
- thyroid hormone
- ADH
- antidiuretic hormone
- Pitressin
- vasopressin
- sex hormone
- steroid hormone
- steroid
- adrenosterone
- glucocorticoid
- catecholamine
- melanocyte-stimulating hormone
- MSH
- thyroid-stimulating hormone
- thyrotrophic hormone
- thyrotrophin
- thyrotropic hormone
- thyrotropin
- TSH
- protirelin
- thyrotropin-releasing factor
- thyrotropin-releasing hormone
- TRF
- TRH
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