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biological

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chemical synapse

chemical synapse A chemical synapse is a junction between cells where an electrical signal in the presynaptic cell triggers release of a neurotransmitter.

A chemical synapse is a junction between cells where an electrical signal in the presynaptic cell triggers release of a neurotransmitter. The neurotransmitter crosses the synaptic gap and binds to ion channels on the postsynaptic cell, changing that cell’s resting electrical state.