Biochemistry. the acetic acid ester of , C 7 H 17 NO 3 , released and hydrolyzed during nerve conduction and causing muscle action by transmitting nerve impulses across synapses. Pharmacology. this substance used in its chloride form in eye surgery. Abbreviation: ACh. Historical Examples It inactivates an enzyme which controls the transmission of nerve […]
an enzyme that hydrolyzes the neurotransmitter : its action is blocked by nerve gases and certain drugs. noun an enzyme in nerve cells that is responsible for the destruction of acetylcholine and thus for switching off excitation of the nerve acetylcholinesterase a·ce·tyl·cho·lin·es·ter·ase (ə-sēt’l-kō’lə-něs’tə-rās’, -rāz’) n. Any of various enzymes in the blood and in certain […]
a substance, C 5 H 9 NO 3 S, used in solution as an inhalant to dissolve mucus in the treatment of chronic bronchitis, asthma, and emphysema and also used as an antidote in acetaminophen poisoning.
- Acetylene series
. the homologous series of unsaturated, aliphatic hydrocarbons containing one triple bond and having the general formula, C n H 2n+2 , as acetylene, HC≡CH. acetylene series The alkyne series. See under alkyne.
a colorless gas, C 2 H 2 , having an etherlike odor, produced usually by the action of water on calcium carbide or by pyrolysis of natural gas: used especially in metal cutting and welding, as an illuminant, and in organic synthesis. Historical Examples They had put a table at the back of this cave, […]