acetylcholine


ace·tyl·cho·line

noun \ə-ˌse-təl-ˈkō-ˌlēn, -ˌsē-; ˈa-sə-ˌtēl-\

Definition of ACETYLCHOLINE

:  a neurotransmitter [C7H16NO2]+ released at autonomic synapses and neuromuscular junctions and formed enzymatically in the tissues from choline

Origin of ACETYLCHOLINE

International Scientific Vocabulary
First Known Use: 1906

ace·tyl·cho·line

noun \ə-ˌset-əl-ˈkō-ˌlēn, -ˌsēt-; ˌas-ə-ˌtēl-\   (Medical Dictionary)

Medical Definition of ACETYLCHOLINE

: a neurotransmitter C7H17NO3 released at autonomic synapses and neuromuscular junctions, active in the transmission of nerve impulses, and formed enzymatically in the tissues from choline
ace·tyl·cho·lin·ic \-kō-ˈlin-ik\ adjective

acetylcholine

noun    (Concise Encyclopedia)

Ester of choline and acetic acid, a neurotransmitter active at many nerve synapses and at the motor end plate of vertebrate voluntary muscles. It affects several of the body's systems, including the cardiovascular system (decreases heart rate and contraction strength, dilates blood vessels), gastrointestinal system (increases peristalsis in the stomach and amplitude of digestive contractions), and urinary system (decreases bladder capacity, increases voluntary voiding pressure). It also affects the respiratory system and stimulates secretion by all glands that receive parasympathetic nerve impulses (see autonomic nervous system). It is important in memory and learning and is deficient in the brains of those with late-stage Alzheimer disease.

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