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neurotransmitter

neurotransmitter

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A neurotransmitter is a chemical messenger that allows nerve cells to “talk” with other nerve cells and with muscles, organs, or other tissue. This chemical is released from one nerve cell, or neuron, at a specialized location (synaptic site), or junction. It then spreads, or diffuses, across a narrow gap, or cleft, to affect one or sometimes two other neurons on the other side of the cleft (postsynaptic), a muscle cell, or another effector cell.

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