catecholamine , Any naturally occurring amine functioning as a neurotransmitter or hormone, including dopamine, norepinephrine, and epinephrine. All are derived from tyrosine and have a catechol group (benzene ring with two hydroxyl groups) with an attached amine group. Neurons in the brain, in the adrenal gland, and in some sympathetic nerve fibres produce different catecholamines.
catecholamine summary
Below is the article summary. For the full article, see catecholamine.
epinephrine Summary
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
