neurotransmitter


neurotransmitter

noun

  1. any of several chemical substances, as epinephrine or acetylcholine, that transmit nerve impulses across a synapse to a postsynaptic element, as another nerve, muscle, or gland.

noun

  1. a chemical by which a nerve cell communicates with another nerve cell or with a muscle

n.1961, from neuro- + transmitter. n.

  1. Any of the various chemical substances, such as acetylcholine, that transmit nerve impulses across a synapse.

  1. A chemical substance that is produced and secreted by a neuron and then diffuses across a synapse to cause excitation or inhibition of another neuron. Acetylcholine, norepinephrine, dopamine, and serotonin are examples of neurotransmitters.

Any one of a number of chemicals that are used to transmit nerve signals across a synapse. They are sprayed from the end of the “upstream” nerve cell and absorbed by receptors in the “downstream” cell.

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