Final answer:
The axon is a tube-like structure that transmits signals from the cell body to axon terminals, which synapse with other cells. Neurotransmitters released at axon terminals facilitate communication between cells.
Step-by-step explanation:
An axon is a tube-like structure that propagates the signal from the cell body to specialized endings called axon terminals. These terminals in turn synapse with other neurons, muscle, or target organs. When the action potential reaches the axon terminal, this causes the release of neurotransmitter onto the dendrite of another neuron. Neurotransmitters released at axon terminals allow signals to be communicated to these other cells, and the process begins again.