Figure 8.1 -In Figure 8.1, What Is the Event in Step 1

Multiple Choice

Figure 8.1
-In Figure 8.1, what is the event in Step 1 that is required to start the process that leads to the release of neurotransmitter from an axon terminal?

A) movement of sodium into the neuron and down the axon
B) movement of calcium down the axon
C) generator potential from the axon hillock
D) migration of newly synthesized neurotransmitter from the soma
E) action potential