What is the region between neurons where chemical communication occurs called?

• A. End plate
• B. Synaptic vesicle
• C. Synapse
• D. Nerve terminal

Answer: (C)

The region between neurons where chemical communication occurs is the synapse. At a chemical synapse, the sending neuron releases neurotransmitters from vesicles in the presynaptic terminal into the synaptic cleft. These chemicals diffuse across the gap and bind to receptors on the postsynaptic membrane, triggering a response in the next neuron. The end plate refers to the special postsynaptic area of a muscle cell at a neuromuscular junction, not the general neuron-to-neuron contact. Synaptic vesicles are the small sacs that hold neurotransmitters in the presynaptic terminal, not the communication site itself. The nerve terminal is the end portion of the axon where release occurs, but the specific region that mediates cell-to-cell chemical communication is the synapse.