The fight or flight response occurs when a person is subject to a threat. What role does epinephrine play in the body?Įpinephrine is involved in the fight or flight response in humans. They too are synthesized from tyrosine and contain the catechol moiety. This is a part of the molecule that contains the group C 6H 4(OH) 2.ĭopamine and norepinephrine are also referred to as catecholamines. Epinephrine is sometimes referred to as a catecholamine as it contains the catechol moiety. (2) Structure of epinephrineĮpinephrine is derived from tyrosine, an amino acid. The usage of the word, with and without the e, however, was not very consistent, thus many seem to use the terms interchangeably. (1, 3)Īdrenalin, without the e, was originally used as a trademark for a product made by an American pharmaceutical firm Parke, Davis & Co. It is a hormone that is secreted by the adrenal glands. Epinephrine (ep- uh-nef-rin, -reen) is also known as adrenaline.
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