Catecholamines are putative neurotransmitters which are present both in the central and peripheral nervous systems. The term “catecholamine” indicates that these substances are derived chemically from an aromatic compound, catechol. The term “biogenic amine”, very often used, is broader, referring to substances with a transmitter function which contain an amino (−NH2) group. Amino acid transmitters, however, are not considered to be biogenic amines.
KeywordsTyrosine Hydroxylase Locus Coeruleus Biogenic Amine Nerve Ending Raphe Nucleus
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