Multiple Choice
Select the first 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 into the synaptic knob.
C) The neurotransmitter combines with protein receptor sites on the subsynaptic membrane.
D) The permeability is altered in a postsynaptic neuron.
E) The neurotransmitter is synthesized.
Correct Answer:

Verified
Correct Answer:
Verified
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