What Part of the Axon is Called the Trigger Zone

Question

What part of the axon is called the trigger zone?
A) Terminal arborization
B) Myelin sheath
C) Axon hillock
D) Synaptic knob

Accepted Answer

The axon leaves the neuron body at the axon hillock, also called the trigger zone. Electrical messages travel away from the body down to the axon's end, which branches in the terminal arborization (arbor means tree). A synaptic knob at the end of each branch forms a synapse (junction) with another cell.