accessory nerve
醫(yī)藥科技

        為運(yùn)動(dòng)神經(jīng)。由顱根和脊髓根兩部分組成:顱根(迷走部)自迷走神經(jīng)根絲下方出延髓;脊髓根(脊髓部)由前、后根之間出上頸髓后上行,經(jīng)枕骨大孔入顱腔,與顱根合并成副神經(jīng)干,然后與舌咽、迷走神經(jīng)一起自頸靜脈孔出顱。爾后分為兩......（本文共 160 字）     [閱讀本文] >>