中腦的有動(dòng)眼神經(jīng),滑車神經(jīng)、
腦橋的有三叉神經(jīng),外展神經(jīng),面神經(jīng),前庭蝸神經(jīng)
延髓的有舌咽神經(jīng),迷走神經(jīng),舌下神經(jīng),副神經(jīng)
總的規(guī)律就是一嗅二視三動(dòng)眼,四滑五叉六外展.七面八蝸九舌咽,十迷走,十一副,十二舌下