Final answer:
The correct sequence for chemical synapse nervous impulse transmission involves an action potential causing the release of neurotransmitters, which bind to receptors and generate a postsynaptic potential, and ends with reuptake to terminate the signal.
Step-by-step explanation:
The correct sequence of steps involved in chemical synapse nervous impulse transmission is most accurately described by option B. Here is the step-by-step process:
- An action potential travels down the axon to the axon terminal.
- The arrival of the action potential causes synaptic vesicles to release neurotransmitters into the synaptic cleft.
- The neurotransmitters travel across the synapse and bind to receptors on the postsynaptic neuron, generating a postsynaptic potential.
- This postsynaptic potential can initiate a new action potential in the postsynaptic neuron if the threshold is reached.
- Finally, to terminate the signal and prevent continuous activation, the neurotransmitters are removed from the synaptic cleft through reuptake, where they are often reabsorbed by the presynaptic neuron or broken down.