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Amnion and Germ Layers


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From The Biology of Prenatal Development.Buy Now

Script: lòt la rele epiblast.

Ipoblast la bay yon sak ki rele sak lonbrik, li sèvi kòm youn nan mwayen pou kò manman an nouri ti anbriyon ki an devlopman an.

Selil ki nan epiblas la fòme yon manbràn ki rele amnyòs. Se anndan l timoun nan devlope ni lè l nan stad anbriyon, ni lè l nan stad fetis pou jouskaske l sot deyò.

Sou anviwon 2 semèn edmi, epiblas la fòme 3 tisi espesyal oubyen kouch anbriyon. Yo rele yo ektodèm, endodèm, mesodèm.

Ektodèm nan pwodui anpil pati nan moun nan tankou sèvo, mwèl epinyè, nè, po, zong ak cheve.

Endodèm nan pwodui manbràn ki anndan sistèm respirasyon an ak manbràn ki anndan tib disjesyon an, li pwodui yon bon pati nan ògàn ki pi enpòtan yo tankou fwa a ak pankreya.

Mesodèm nan fòme kè a ren, zo, katilaj, mis tankou bibit, selil san ak lòt pati nan kò a.

Sou 3 semèn, sèvo a divize an twa seksyon fondamatal, se devan sèvo,

All ages referenced to fertilization, not last menstrual period.
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