external acoustic meatus 中文意思是什麼
external acoustic meatus
解釋
耳竅外耳道-
An anterior sigmoid sinus tend to be observed when the distance between petrous back wall and external auditory canal is shorter. 5. 11 / 40 ( 27. 5 % ) posterior lip of internal acoustic meatus cover facial nerve more than 1 / 3
氣化的乳突其顳骨巖部后骨板與外耳道後壁之間距離較大,外耳道後壁和顳骨巖部后硬腦膜之間距離也反映了乙狀竇前移程度,該距離愈小,乙狀竇愈有前移傾向。
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