| 释义 |
AdrenalinenUK
Adrenalin (əˈdrɛnəlɪn) n (Biochemistry) trademark a brand of adrenalineep•i•neph•rine or ep•i•neph•rin (ˌɛp əˈnɛf rɪn)
n. 1. a hormone secreted by the adrenal medulla upon stimulation by the central nervous system in response to stress, as anger or fear, and acting to increase heart rate, blood pressure, cardiac output, and carbohydrate metabolism. 2. a commercial preparation of this substance, used chiefly as a heart stimulant and antiasthmatic. Also called adrenaline. [1895–1900; epi- + Greek nephr(ós) kidney + -ine2] Thesaurus| Noun | 1. |  Adrenalin - a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve actionadrenaline, epinephrin, epinephrinepressor, 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 pressureendocrine, hormone, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effectneurotransmitter - a neurochemical that transmits nerve impulses across a synapsecatecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal glandbrand, brand name, marque, trade name - a name given to a product or service |
TranslationsEncyclopediaSeeadrenalineAdrenalinenUK
epinephrine [ep″ĭ-nef´rin] a hormone produced by the medulla" >adrenal medulla; called also adrenaline (British). Its function is to aid in the regulation of the sympathetic branch of the autonomic nervous system" >autonomic nervous system. At times when a person is highly stimulated, as by fear, anger, or some challenging situation, extra amounts of epinephrine are released into the bloodstream, preparing the body for energetic action. Epinephrine is a powerful vasopressor that increases blood pressure and increases the heart rate and cardiac output. It also increases glycogenolysis and the release of glucose from the liver, so that a person has a suddenly increased feeling of muscular strength and aggressiveness.
Some disorders of the adrenal glands, such as addison's disease, reduce the output of epinephrine below normal. By contrast, excessive activity of those glands, as sometimes seen in highly emotional persons, tends to produce tenseness, palpitation, high blood pressure, perhaps diarrhea, and overaggressiveness. Certain adrenal tumors also result in the production of too much epinephrine. Removal of the tumor relieves symptoms.
Epinephrine is also produced synthetically and can be administered parenterally, topically, or by inhalation. It acts as a vasoconstrictor, antispasmodic, and sympathomimetic, and it is used as an emergency heart stimulant as well as to relieve symptoms in allergic conditions such as urticaria (hives), asthma, and other conditions requiring bronchodilation and as a adjunct to local and regional anesthesia. It is the most effective drug for counteracting the lethal effects of anaphylactic shock. It is also used topically in the eye in the treatment of glaucoma.Adrenalin (ə-drĕn′ə-lĭn) A trademark for a preparation of epinephrine.AdrenalinenUK
Synonyms for Adrenalinnoun a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin)Synonyms- adrenaline
- epinephrin
- epinephrine
Related Words- pressor
- vasoconstrictive
- vasoconstrictor
- endocrine
- hormone
- internal secretion
- neurotransmitter
- catecholamine
- brand
- brand name
- marque
- trade name
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