一種神經(jīng)細(xì)胞。由樹突、軸突、髓鞘、尼氏體、神經(jīng)膜及神經(jīng)原纖維構(gòu)成,具有傳導(dǎo)神經(jīng)沖動(dòng)的功能。也作「神經(jīng)元」?! ?/span>