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单词 Axonal projection
释义

Axonal projection

英语百科

Axon

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.
Cross section of an axon.
1. Axon
2. Nucleus of Schwann Cell
3. Schwann Cell
4. Myelin Sheath
5. Neurilemma
A dissected human brain, showing grey matter and white matter
An illustrated chemical synapse

An axon (from Greek ἄξων áxōn, axis), is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. Myelinated axons are known as nerve fibers. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons.

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更新时间:2025/6/17 22:04:30