Synaptic boutons - definition

aka axon terminals, synaptic boutons are small swellings that are found at the terminal ends of axons. They are typically the sites where synapses with other neurons are found, and neurotransmitters are stored there to communicate with other neurons via these synapses.

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2-Minute Neuroscience: The Neuron

Axon terminals INDICATED BY ARROWS. — Synaptic boutons indicated by arrows.

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