adrenalin



adrenalin defined in 1939 year

adrenalin - Adrenalin (Lat. renes, the kidneys);
adrenalin - Active principle of the supra-renal gland, a small organ attached to the kidneys. It was discovered in 1901, and is a very powerful astringent. It maintains the muscular tone of the arteries and its lack produces Addison's disease (q.v.). Injected into the tissues, it causes the smaller blood vessels to contract and so arrests bleeding and reduces local congestion; it is, therefore, effective in hay fever, asthma, and oedema of the larynx. Adrenalin is used in local anaesthetics. During physical effort or excitement adrenalin releases sugar from the liver into the blood, thereby increasing bodily energy. See Endocrine.

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