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前庭阶与鼓阶内的外淋巴经何种结构相通()。

单选题
2021-12-29 23:20
A、蜗水管
B、蜗窗
C、蜗孔
D、蜗小管
E、膜蜗管
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正确答案
C

试题解析
骨蜗管内共有3个管腔,上方者名前庭阶,自前庭开始;中间为膜蜗管,又名中阶,系膜迷路;下方者名鼓阶,起自蜗窗,为蜗窗膜所封闭。骨螺旋板顶端形成螺旋板钩,蜗轴顶端形成蜗轴板;螺旋板钩、蜗轴板和膜蜗管顶盲端共围成蜗孔。前庭阶与鼓阶内的外淋巴经蜗孔相通。

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