Final answer:
Neurotransmitters are stored and released from axon terminals and axon varicosities. They bind to receptors on the dendrites of other neurons, allowing signals to be transmitted.
Step-by-step explanation:
Neurotransmitters are stored and released from axon terminals and axon varicosities. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters, which then bind to receptors on the dendrites of another neuron. This allows signals to be transmitted from one neuron to another, muscles, or target organs.