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黄斑发育完成是在()

单选题
2021-12-29 14:00
A、胚胎第8个月
B、生后3天
C、生后4个月
D、生后半年
E、生后1年
查看答案

正确答案
C

试题解析
本题为关于黄斑发育的基础知识题,胚胎6个月时黄斑部比周围厚,7个月时出现中心凹,局部神经节细胞层变薄。婴儿刚出生时黄斑尚未发育成熟,没有固视能力,约于4个月时黄斑部才发育完全。所以本题答案为C。

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