V2EX axon

Axon

释义 Definition

axon(轴突):神经元(神经细胞)的一条细长突起,用来把电信号从细胞体传导到其他神经元、肌肉或腺体。(在生物学语境中最常用;另有少见的其他专业用法。)

发音 Pronunciation (IPA)

/k.sn/

例句 Examples

An axon carries signals away from the neuron's cell body.
轴突将信号从神经元的细胞体向外传导。

Damage to the myelin around an axon can slow nerve transmission and affect movement.
轴突周围的髓鞘受损会减慢神经传导,从而影响运动功能。

词源 Etymology

axon 来自希腊语 áxōn(意为“轴、车轴”),因为轴突在结构上像“轴”一样从细胞体向外延伸,承担“传导通路”的作用。该词在19世纪末到20世纪初随神经科学的发展进入现代科学英语。

相关词 Related Words

文学与著作 Literary Works

  • Principles of Neural Science(Kandel 等):在神经元结构与信号传导章节中频繁使用 axon
  • Neuroscience(Purves 等):讲解神经系统基础概念时大量出现 axon
  • On the Structure and Function of the Nervous System(Santiago Ramón y Cajal 相关经典著作与译著传统):讨论神经元形态学时常涉及 axon(多与“神经元学说”相关语境出现)。
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