noun

• A compound which occurs throughout the nervous system, in which it functions as a neurotransmitter.

  ‘In someone with Alzheimer's, cholinesterase breaks down and destroys acetylcholine, the neurotransmitter chemical.’

  More example sentences

  • ‘All nerve agents act by inhibiting the enzyme acetylcholinesterase, which breaks down the neurotransmitter acetylcholine.’
  • ‘Possible modulators of growth include acetylcholine, dopamine, vasoactive intestinal polypeptide, and glucagon.’
  • ‘However, acetylcholine, the first neurotransmitter to be identified, was not isolated until the early 1920s.’
  • ‘The action of a common neurotransmitter, such as acetylcholine, illustrates how ion channel receptors work.’