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| 颈静脉壁 (又称 inferior wall 下壁或 floor底，为分隔鼓室和颈静脉窝的薄层骨板。若因先天性缺损而由结缔组织分隔，颈静脉球可突入鼓室，故鼓膜或鼓室手术时应注意保护颈静脉球，以免损伤后引起严重出血) | |||
| 颈静脉壁 | |||
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