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问题详情

胚泡的组成是

A、滋养层、内细胞群、胚外体腔

B、滋养层、胚泡腔、内细胞群

C、胚盘、胚泡腔、内细胞群

D、内细胞群、胚泡腔、绒毛膜

E、滋养层、内细胞群、羊膜腔

时间：2021-07-17 23:16 关键词：护理学专升本组织胚胎学期末成绩低于60分期末考试

答案解析

B

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