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.

Question

Quizplus · Accepted Answer

The sequence of events in synaptic transmission starts with calcium ions entering the presynaptic terminal, which triggers the release of neurotransmitters by exocytosis. The neurotransmitters then flow across the synaptic cleft and bind to receptors on the postsynaptic membrane. This binding can lead to the production of an action potential in the postsynaptic membrane, making it the last step in the process.

A Neurotransmitter Is Released at a Synapse