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Amnion and Germ Layers


7 days

From The Biology of Prenatal Development.Buy Now

Script: Lẹhin ọsẹ kan, ẹyin keekeke ti o wa lara akojọpọ ẹyin inu yio di awọ fẹlẹfẹlẹ meji ti a npe ni aipobilasiti ati ẹpibilasiti.

Aipobilasiti yi ni yio di ohun ti a npe ni apo ẹyin, eyiti o jẹ ọkan lara awọn ẹya ara, nipasẹ eyiti iya yio maa gba fun oyun inu rẹ l’ounjẹ.

Ẹyin keekeke lati ara ẹpibilasiti yio di awọ fẹlẹfẹlẹ kan ti a npe ni aminiọnu, ninu eyiti ọmọ inu oyun ti a S̩ẹS̩ẹ ni, ati ọmọ inu oyun ti o ti le ni ọsẹ mẹjọ yio ti maa dagbasoke titi di akoko ibimọ.

Lẹhin ọsẹ meji ati aabọ, ẹpibilasiti yio ti di oriS̩i ẹya ara mẹta, tabi awọ fẹlẹfẹlẹ, ti a npe ni ẹkitodaamu, ẹndodaamu, ati mẹsodaamu.

Ekitodaamu yio di awọn oriS̩iriS̩i ẹya ara bii ọpọlọ, ọpa-ẹhin, iS̩an-ara, awọ-ara, eekanna, ati irun.

Ẹndodaamu yio di awọ ti a fi tẹ inu ẹya ara ti atẹgun ngba lara enia ati ti inu ẹya ara ti ounjẹ ngba, yio si tun di lara oriS̩iriS̩i awọn ẹya ara miran bii ẹdọ ati ẹya ara ti oronro ngbe inu rẹ.

Mẹsodaamu yio di ọkan, kidinrin, egungun, kerekere, iS̩an, ẹjẹ, ati awọn ẹya miran.

All ages referenced to fertilization, not last menstrual period.
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The Morula and Blastocyst
3 Billion Base Pairs per Cell
3 Billion Base Pairs per Cell
Amnion and Germ Layers
Amnion and Germ Layers
Early Embryonic Development
Early Embryonic Development
Human Development
Human Development
Heart and Circulatory System
Heart and Circulatory System
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