Which one of the following is not a step in the conduction of nerve AP information across a chemical synapse?

Question

Which one of the following is  not  a step in the conduction of nerve AP information across a chemical synapse?

Answer

Depolarization of the presynaptic terminal from electrotonic current flow is critical

Answer

Neurotransmitter molecules diffuse across the synaptic cleft to the postsynaptic cell

Answer

A voltage change in the presynaptic terminal is needed to ultimately get exocytosis of vesicles of neurotransmitter

Answer

Calcium ions entering the synaptic cleft cause the endocytosis of synaptic vesicles

Answer

The presynaptic AP causes an influx of Ca 2+  ions into the synaptic terminal

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