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单词 Synaptic bouton
释义

Synaptic bouton

英语百科

Axon terminal

(重定向自Synaptic bouton)
Activity at an axon terminal: Neuron A is transmitting a signal at the axon terminal to neuron B (receiving).  Features:  1. Mitochondrion.  2. Synaptic vesicle with neurotransmitters.  3. Autoreceptor.  4. Synapse with neurotransmitter released (serotonin). 5. Postsynaptic receptors activated by neurotransmitter (induction of a postsynaptic potential). 6. Calcium channel. 7. Exocytosis of a vesicle. 8. Recaptured neurotransmitter.
At one end of an elongated structure is a branching mass. At the centre of this mass is the nucleus and the branches are dendrites. A thick axon trails away from the mass, ending with further branching which are labeled as axon terminals. Along the axon are a number of protuberances labeled as myelin sheaths.

Axon terminals (also called synaptic boutons) are distal terminations of the branches of an axon. An axon nerve fiber is a long, slender projection of a nerve cell, or neuron, that conducts electrical impulses (called "action potentials") away from the neuron's cell body, or soma, in order to transmit those impulses to other neurons.

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