A neurotransmitter is released at a synapse. Which of the following occurs last?

A) Calcium ions enter the presynaptic terminal.
B) Synaptic vesicles release neurotransmitter by exocytosis.
C) An action potential is produced in the postsynaptic membrane.
D) Neurotransmitter flows rapidly across the synaptic cleft.
E) Neurotransmitter binds with the receptor on the postsynaptic membrane.

Synaptic Vesicles

Small sacs within presynaptic nerve terminals that contain neurotransmitters, critical for transmission of nerve impulses.

Exocytosis

The process by which a cell transports secretory products through the cytoplasm to the plasma membrane and then into the extracellular environment.

Action Potential

A rapid change in electrical potential across the membrane of a nerve or muscle cell when it is stimulated, leading to transmission of an electrical impulse.