Final answer:
The electrical impulse that stimulates neurotransmitter release arises in the axon of a neuron. This impulse travels along the axon to the axon terminals, where neurotransmitters are released into the synapse to communicate with other neurons.
Step-by-step explanation:
The impulse, or action potential, is generated within the neuron and travels down the axon to the axon terminals. When the impulse reaches these terminals, it triggers the release of neurotransmitters into the synapse, which is the gap between neurons. These neurotransmitters then bind to receptors on the dendrites of the receiving neuron, allowing the electrical impulse to continue its journey through the nervous system.
An axon is a tube-like structure that extends from the cell body (soma) of the neuron. It is responsible for carrying the nerve impulse away from the cell body toward other neurons, muscles, or glands. At its end, the axon branches out into multiple axon terminals, where the synapses with other neurons occur. The transmission of signals across these synapses is critical for neural communication.