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 神經(jīng)纖維的髓鞘化是指絕緣的脂肪鞘(稱為髓鞘)包裹神經(jīng)纖維的過程,保證了神經(jīng)纖維在傳導(dǎo)時(shí)彼此絕緣,加快了神經(jīng)纖維的傳導(dǎo)速度,提高了信息傳遞的效率。嬰兒時(shí)期神經(jīng)纖維髓鞘形成不全,使興奮傳導(dǎo)易波及鄰近神經(jīng)而引起泛化現(xiàn) (共 190 字) [閱讀本文] >>