What is at the End of Each Axon

Question

What is at the end of each axon?
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.