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 神經(jīng)纖維(nervefiber)是由神經(jīng)元的長突起外包膠質(zhì)細(xì)胞所組成。神經(jīng)纖維的功能是傳導(dǎo)神經(jīng)沖動。根據(jù)包裹軸突的膠質(zhì)細(xì)胞是否形成髓鞘,神經(jīng)纖維可分有髓神經(jīng)纖維和無髓神經(jīng)纖維(圖2-41)。圖2-41周圍神經(jīng)纖維有髓神經(jīng)纖維:軸突表面 (共 646 字) [閱讀本文] >>