Final answer:
An axon is a long extension of the cell body that carries nerve impulses away from the cell body and toward other cells. It forms axon terminals where signals are transmitted to other cells through synapses.
Step-by-step explanation:
An axon is a long, thin extension of the cell body that transmits nerve impulses away from the cell body and toward other cells. It branches at the end, forming multiple axon terminals where nerve impulses are transmitted to other cells.
At each axon terminal, there is a complex membrane junction called a synapse which transmits signals to other cells. The axon may branch hundreds of times, but each neuron only has one axon.