瞳孔括约肌和瞳孔开大肌发育来源于()A.表皮外胚层B.神经外胚层C.中胚层D.内胚层E.神经外胚层和中胚层

作者: rantiku 人气: - 评论: 0
问题 瞳孔括约肌和瞳孔开大肌发育来源于()
选项 A.表皮外胚层 B.神经外胚层 C.中胚层 D.内胚层 E.神经外胚层和中胚层
答案 B
解析

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