Select the Last Step for Synaptic Signaling When the Action

Multiple Choice

Select the last step for synaptic signaling when the action potential arrives at the axon terminal of a presynaptic neuron.

A) A neurotransmitter is released by exocytosis.
B) Calcium flows in the synaptic knob.
C) The neurotransmitter combines with a protein receptor on the subsynaptic membrane.
D) The permeability is altered in a postsynaptic neuron.
E) Sodium influx occurs at the axon terminals