Neuron A (transmitting) to neuron B (receiving) - 1. Mitochondria - 2. synaptic vesicle with neurotransmitters - 3. Autoreceptor - 4. Synapse with neurotransmitter released (serotonin) - 5. Postsynaptic receptors activated by neurotransmitter (induction of a postsynaptic potential) - 6. Calcium channel - 7. Exocytosis of a vesicle - 8. Recaptured neurotransmitter

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