acetylcholine acetylcholine n. 1. a neurotransmitter released by the transmitting dendron at autononmous synapses and at neuromuscular junctions. It is a quaternary amine with an obligatory negative counterion. The nominal formula for the hydroxide form is {C7H17NO3}. Structural formula {(CH3)3N(+)CH2CH2.O.CO.CH3.OH(-)}.

Note: Acetylcholine is the first recognized and best-studied of the neurotransmitters. At receptors it is recycled into choline by the action of acetylcholinesterase. Acetylcholinesterase inhibitors therefore function as nerve poisons. For biochemical studies it is prepared typically in the chloride or bromide forms. [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Acetylcholine — IUPAC name …   Wikipedia

  • Acetylcholine — Acétylcholine Pour les articles homonymes, voir Ach. Acétylcholine …   Wikipédia en Français

  • ACÉTYLCHOLINE — L’acétylcholine (ACh) est l’ester acétique de la choline, corps basique azoté dérivé de l’ammonium quaternaire. Formule de l’acétylcholine: 廓 acétoxyéthyl triméthyl ammonium. L’ACh a été préparée par voie synthétique en 1867 et peut être obtenue… …   Encyclopédie Universelle

  • acetylcholine — acetylcholine. См. ацетилхолин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • acetylcholine — [as΄i til΄kō′lēn] n. [ ACETYL + CHOLINE] the acetic acid ester of choline, (CH3) 3N(OH)CH2CH2OCOCH3, found in many body tissues, esp. at neuromuscular junctions, acting as a nerve impulse transmitter: its chloride or bromide is used in medicine… …   English World dictionary

  • Acétylcholine — Pour les articles homonymes, voir ACh. Acétylcholine …   Wikipédia en Français

  • acetylcholine — The acetic ester of choline, the neurotransmitter substance at cholinergic synapses, which causes cardiac inhibition, vasodilation, gastrointestinal peristalsis, and other par …   Medical dictionary

  • acetylcholine — n. the acetic acid ester of the organic base choline: the neurotransmitter released at the synapses of parasympathetic nerves and at neuromuscular junctions. After relaying a nerve impulse, acetylcholine is rapidly broken down by the enzyme… …   The new mediacal dictionary

  • acetylcholine — Acetyl ester of choline. Perhaps the best characterized neurotransmitter, particularly at neuromuscular junctions. ACh can be either excitatory or inhibitory, and its receptors are classified as nicotinic or muscarinic, according to their… …   Dictionary of molecular biology

  • acetylcholine — acetilcholinas statusas T sritis chemija formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. acetylcholine rus. ацетилхолин ryšiai: sinonimas – 2 etanoiloksietiltrimetilamonis …   Chemijos terminų aiškinamasis žodynas

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