在这一过程中如果可以经鼓室隔膜通气的话，尽管峡部闭锁也不会产生上鼓室的负压。

In this process, if may pass through drum room mutual lack of understanding ventilation, although the canyon department block system will not have on the drum room negative pressure.

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目的 探讨颈动脉管、颈静脉窝与下鼓室的变异关系 ，为此区域手术提供可靠的解剖学资料。

Objective To explore the variable relationship among carotid canal, jugular pit and hypotympanum to provide applied anatomic data for the operations of jugular pit and hypotympanum region.

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受感染的骨膜会因为鼓室内脓液使其膨胀而不能正常的移动。

An infected eardrum won't move as it should because the pus presses against it and may make it bulge.

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