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词汇 Motor nerve fibers
分类 英语词汇 英语翻译词典
释义

Motor nerve fibers

中文百科

轴突 Axon

(重定向自Motor nerve fibers)

轴突(Axon)由神经元,即神经细胞的细胞本体长出突起,功能是传递细胞本体的动作电位至突触。在神经系统中,轴突是主要的神经信号传递渠道。大量轴突牵连一起,以其外型类似而称为神经纤维。神经常依以其特定功能而取名。例如,视神经指视网膜上的神经细胞。

英语百科

Axon 轴突

(重定向自Motor nerve fibers)
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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