- the acetic acid ester of choline, C7H17NO3, released and hydrolyzed during nerve conduction and causing muscle action by transmitting nerve impulses across synapses.
- this substance used in its chloride form in eye surgery. Abbreviation: ACh
- a chemical substance secreted at the ends of many nerve fibres, esp in the autonomic nervous system, and responsible for the transmission of nervous impulses. Formula: CH 3 CO 2 (CH 2) 2 N (CH 3) 3 +