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- Synapse is the means by which an
- impulse is transmitted between neural
- cells. The axon of one neuron synapses
- with the dendrites of other neurons. The
- many-branched, terminal portion of an
- axon not only may synapse with many
- other neurons but also may synapse with
- numerous points on a single neuron. Each
- terminal branch of an axon ends in a
- synaptic bouton. A gap called the
- synaptic cleft separates the presynaptic
- membrane of a synaptic bouton from the
- postsynaptic membrane of a dendrite, or a
- non-nervous target cell, such as a muscle cell.
- Transmission across a cleft is accomplished
- by the diffusion of a chemical transmitter
- released by synaptic vesicles in the
- bouton of the axon. Impulses traveling down
-
-