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The Yolk Sac


5 weeks, 2 days

From The Biology of Prenatal Development.Buy Now

Script: 卵黃囊包含 早期生殖細胞, 叫做胚細胞。 到5週, 這些胚細胞移到 腎鄰近的 生殖器官。

All ages referenced to fertilization, not last menstrual period.
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Transparent Skin
Transparent Skin
Cerebral Hemispheres
Cerebral Hemispheres
The Yolk Sac
The Yolk Sac
The Liver and Heart
The Liver and Heart
Hand Plates and Cartilage
Hand Plates and Cartilage
Brainwaves
Brainwaves
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