交感神經(jīng):從丘腦下部交感神經(jīng)中樞發(fā)出纖維下行,達(dá)脊睫中樞胸上平面時(shí)換第二神經(jīng)元,再上行達(dá)頸交感神經(jīng)節(jié),換第三神經(jīng)元,隨頸動(dòng)脈進(jìn)入顱內(nèi),經(jīng)海綿竇進(jìn)入三叉神經(jīng)半月狀神經(jīng)節(jié),再隨三叉神經(jīng)第一支入眶達(dá)鼻睫神經(jīng),再從鼻睫神經(jīng)    （共 268 字）     [閱讀本文] >>