What is the point from which an axon releases chemicals into the synapse?

Question

Quizplus · Accepted Answer

The presynaptic terminal is the point from which an axon releases chemicals (neurotransmitters) into the synapse, where they can be taken up by the dendrites of a neighboring neuron. The myelin sheath is a fatty insulation layer that wraps around the axon to speed up the transmission of nerve impulses, and it does not release chemicals into the synapse. Dendritic spines are small protrusions on the dendrites that receive signals from the axons of neighboring neurons. The endoplasmic reticulum is an organelle within the neuron that is involved in protein synthesis and other cellular processes, but it is not directly involved in neurotransmitter release.

What Is the Point from Which an Axon Releases Chemicals