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Medscape
7 天
Life Inside the Womb: Implications for Newborn and Infant Nurses
The fetal membranes consist of the chorion, amnion, yolk sac, and allantois. The chorion has three layers: cytotrophoblastic, chorionic connective tissue, and basement membrane. The chorion lies ...
1 个月
on MSN
‘Infinite Life’ Review: Eggs and Evolution
We are enthusiastically introduced, as well, to the other membranes, beyond the better-known amnion—allantois, yolk sac and ...
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