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The Endowment for Human Development
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End of Embryonic Period


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: 8 週で 胎生期は終了します

この間に ヒトの胎芽は 1 個の細胞から およそ10 億個の細胞に成長し 4,000 の個別の特徴を有する 解剖学的構造を形成します

胎芽は この時点で 大人に見られる 構造の90% 以上を 備えています

All ages referenced to fertilization, not last menstrual period.
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Epidermis and Hair
Epidermis and Hair
The Embryonic Period
The Embryonic Period
End of Embryonic Period
End of Embryonic Period
Kidneys Produce Urine
Kidneys Produce Urine
Eyelid Fusion
Eyelid Fusion
Breathing Motions
Breathing Motions
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