Definition of acetylcholine
: a neurotransmitter [C7H16NO2]+ released at autonomic synapses and neuromuscular junctions and formed enzymatically in the tissues from choline
Updated on: 4 Jul 2018
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Recent Examples of acetylcholine from the Web
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Anticholinergic drugs function by blocking the effects of acetylcholine, a chemical released by nerve cells to send signals to other nerves and muscles.
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Freeing up cholesterase production is essential to stop the uncontrolled bombardment of organs and muscles with the acetylcholine nerve signals.
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Levels of acetylcholine are known to be significantly lower in people with Alzheimer's disease, the most common cause of dementia in older adults, according to the Mayo Clinic.
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Therefore, some anticholinergic drugs may block the normal activity of acetylcholine in regions of the brain associated with memory and cognition, resulting in Alzheimer's-like symptoms, according to Savva.
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All nerve agent victims are given atropine, which blocks muscarinic acetylcholine receptors.
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In essence, the nerve agent triggers a protein chain reaction, resulting in an uncontrolled bombardment of body tissue and organs with nerve signals by a neurotransmitter called acetylcholine.
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The body constantly has to remove those acetylcholine molecules from the receptors, otherwise there would be a dangerous build-up.
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Some poison frogs carry a morphine-like compound called epibatidine, which works just like the compound acetylcholine, which sends messages between nerve cells.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acetylcholine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of acetylcholine
Medical Dictionary
medical Definition of acetylcholine
: a neurotransmitter [C7H16NO2]+ released at autonomic synapses and neuromuscular junctions, active in the transmission of nerve impulses, and formed enzymatically in the tissues from choline
Learn More about acetylcholine
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Nglish: Translation of acetylcholine for Spanish speakers Britannica.com: Encyclopedia article about acetylcholine
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