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The Endowment for Human Development
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The Folding of the Embryo


3 weeks

From The Biology of Prenatal Development.Buy Now

Script: Laika posmā no 3 līdz 4 nedēļām izveidojas ķermeņa plāns, kas sastāv no smadzenēm, muguras smadzenēm, un embrija sirds, kas viegli atpazīstami kopā ar dzeltenuma pūsli.

Ātrā augšana liek relatīvi plakanajam embrijam salocīties. Šis process ievieto daļu dzeltenuma pūšļa barošanas sistēmas epitēlijaudos un izveidojas topošā cilvēka krūškurvis un vēdera dobums.

4 NEDĒĻAS

All ages referenced to fertilization, not last menstrual period.
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Human Development
Human Development
Heart and Circulatory System
Heart and Circulatory System
The Folding of the Embryo
The Folding of the Embryo
The Folding of the Embryo
The Folding of the Embryo
Heart Development
Heart Development
The Embryo and Yolk Sac
The Embryo and Yolk Sac
Buy the Biology of Prenatal Development DVD
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