Calcium ion entry into the axon terminal is necessary for the release of neurotransmitter into the synaptic cleft in a chemical synapse.

Name: Calcium ion entry into the axon terminal is necessary for the release of neurotransmitter into the synaptic cleft in a chemical synapse.
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Calcium ion entry triggers the fusion of synaptic vesicles containing neurotransmitters with the presynaptic membrane, leading to the release of neurotransmitter into the synaptic cleft.

Calcium Ion Entry into the Axon Terminal Is Necessary for the Release