When an action potential reaches the end of the axon terminal:
A) the action potential "hops" directly across the synaptic cleft.
B) it electrically activates the receptor sites.
C) it causes synaptic vesicles to release neurotransmitters.
D) it reverses direction.

Question

Quizplus · Accepted Answer

When an action potential reaches the end of the axon terminal, it causes synaptic vesicles to release neurotransmitters. The neurotransmitters then diffuse across the synapse to bind with specific receptor sites on the postsynaptic cell, initiating a new action potential.

When an Action Potential Reaches the End of the Axon