内耳门 - Porus acusticus internus

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描述

The internal acoustic opening is a large orifice near the center of posterior surface of petrous part, its size varies considerably; its margins are smooth and rounded, and it leads into a short canal, the internal acoustic meatus, about 1 cm. in length, which runs lateralward. It transmits the facial and acoustic nerves and the internal auditory branch of the basilar artery.


结构高低级

大体解剖 > 骨, 骨骼系统 > 中轴骨骼 > 颅 > 颞骨 > 颞骨岩部 > Facies posterior partis petrosae > 内耳门

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