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epinephrine
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epinephrine

hormone
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Also known as: adrenaline
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epinephrine-stimulated cAMP synthesis
epinephrine-stimulated cAMP synthesis
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Category: Science & Tech
Also called:
adrenaline
Key People:
Jokichi Takamine
Sir Edward Albert Sharpey-Schafer
John Jacob Abel
Related Topics:
adrenal gland
adrenochrome
epinephrine autoinjector
glycogenolysis
norepinephrine
On the Web:
Healthline - What’s the Difference Between Epinephrine and Norepinephrine? (Apr. 02, 2024)
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epinephrine, hormone that is secreted mainly by the medulla of the adrenal glands and that functions primarily to increase cardiac output and to raise glucose levels in the blood. Epinephrine typically is released during acute stress, and its stimulatory effects fortify and prepare an individual for either “fight or flight” (see fight-or-flight response). Epinephrine is closely related in structure to norepinephrine, differing only in the presence of a methyl group on the nitrogen side chain. In both substances, the amine (nitrogen-containing) group is attached to a catechol group (a benzene ring with two hydroxyl groups)—a structure unique to the catecholamines. ...(100 of 611 words)

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