Final answer:
At the axon terminal, neurotransmitters are released and bind to receptors on the receiving cell's membrane, allowing the signal to be transmitted to the next cell.
Step-by-step explanation:
Once the electrical signal reaches the end of the axon at the axon terminal, neurotransmitters are released. These neurotransmitters are the chemical messengers that will travel across the synapse, or synaptic cleft, to transmit signals to other neurons or muscle cells. At the synapse, the neurotransmitters bind to receptors on the membrane of the receiving cell's dendrites or motor end plate, depending on whether the cell is another neuron or a muscle cell.