acetylcholine

Medical Dictionary

acetylcholine a·ce·tyl·cho·line (ə-sēt'l-kō'lēn')
n.
Abbr. Ach
A white crystalline derivative of choline that is released at the ends of nerve fibers in the somatic and parasympathetic nervous systems and is involved in the transmission of nerve impulses in the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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