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The Endowment for Human Development
The Endowment for Human Development
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Amnion and Germ Layers


7 days

From The Biology of Prenatal Development.Buy Now

Script: N’izu nke mbụ, sel nke dị n’ime sel ukwu na - akpụpụta ogo abụọ ana - akpọ haipoblastị nakwa epiblastị.

Haipoblastị na – eme ka enwe nkochi ime akwa nwa, nke bụ otu n’ime akụkụ nke nne si ebuga nri nye nwa nke na amalite ọkpụkpụ.

Sel si na epiblastị na - ekepụta mgbidi ana - akpọ amniọnụ, n’ime nke ẹmbrayo na fitọs (ya bụ nwa ebu n’afọ) ma emesia na – eto ruo oge ọmụmụ.

Na rahụrahụ izu abụọ na ọkara, epiblastị ekeputala akwara atọ nwere ọrụ ha pụrụ iche, ma ọ bụ ngidịrigi izizi, ana - akpọ ektodamụ, endodamụ, na mesodamụ.

Ektodamụ na eweputa ọtụtụ akụkụ gunyere ụbụrụ, ọgidigi azụ, irighiri akwara, anụ ahụ, mbọ, na ntụtụ isi.

Endodamụ na - ekepụta usoro nke akụkụ okuku ume na akụkụ ogwugwa nri, na-ewepụtakwa ọke ogan ndị dị oke mkpa dị ka umeji n’ononukporokọ.

Mesodamụ na - akpụpụta mkpụrụobi, akịrị, ọkpụkpụ, katileji [ya bụ ịhe dị na ahụ mmadụdịka ọkpụkpụ ma na-anọkwa anọ], mọzụlụ, sel ọbara, na akụkụ ndị ọzọgasi.

All ages referenced to fertilization, not last menstrual period.
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