bouton (redirected from boutons)

bouton /bou·ton/ (boo-tahn´) [Fr.] a buttonlike swelling on an axon where it has a synapse with another neuron.

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synaptic bouton  b. terminal.

bouton terminal  (ter-mĭ-nahl´) pl. boutons´ terminaux´  a buttonlike terminal enlargement of an axon that ends in relation to another neuron at a synapse.

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bou·ton (b-tôn)

n.

A button, pustule, or knoblike swelling.

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bouton

[bo̅o̅tôN′, bo̅o̅′ton]

Etymology: Fr, button

1 a button, pustule, or knoblike swelling, such as the expanded end of an axon at a synapse (terminaux) which comes into contact with cell bodies of other neurons.

2 a lesion associated with cutaneous leishmaniasis.

3 a small abscess of the intestinal mucosa in amebic dysentery.

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bouton

[Fr.] button.

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bouton terminal

the swollen end of an axon that contributes to a synapse.

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axon 

The threadlike process of a neuron which conducts nerve impulses from the cell body to the neuron's ending (bouton) where it is transmitted via a synapse to another neuron, muscle or gland. Syn. nerve fibre (when it is sheathed). See neuron; synapse.

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neuron

Structural unit of the nervous system consisting of the nerve cell body and its various processes, the dendrites, the axon and the ending (also called bouton, end foot or axon terminal). There are many types of neurons within the nervous system; some transmit afferent nerve impulses to the brain (e.g. those carrying information from the photoreceptors to the visual cortex), or to the spinal cord (e.g. those carrying information from the receptors in the skin to the spinal cord). They are called sensory neurons. Others transmit efferent motor nerve impulses to a muscle (e.g. those carrying information from the Edinger-Westphal nucleus to the sphincter pupillae and ciliary muscles). These are called motor neurons. Other neurons carry nerve impulses from one neuron to another (internuncial neurons). Note: also spelt neurone. See action potential; synapse.