来自中胚层的是A.骨迷路B.鼓室C.鼓膜D.咽鼓管E.膜迷路

作者: rantiku 人气: - 评论: 0
问题 来自中胚层的是
选项 A.骨迷路 B.鼓室 C.鼓膜 D.咽鼓管 E.膜迷路
答案 A
解析 :在胚胎发育过程中,膜迷路来自外胚层,骨迷路来自中胚层。第一咽囊形成咽鼓管,外侧为盲端,扩大形成鼓室,故鼓室与咽鼓管均来自内胚层。鼓膜来自3个胚层。

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