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Amnion and Germ Layers


7 days

From The Biology of Prenatal Development.Buy Now

Script: Usbuuca 1da, unugyada cufka unugga guda hoose waxay sameynayaan labo lakab lagu magacaabo hayboblast iyo ebiblast.

Haypoblast waxa ka soo baxa koleyga nafaqada, oo ka mid ah qaababka ay mariso hooyadu nafaqada ay siinayso embriyaha bilowga ah.

Unugyada ebiblast waxay sameeyaan xuub lagu magacaabo amniyon, oo gudihiisa embriyuhu dabadeedna uurjiifku ku kooraan illaa dhalashada.

Taqriiban 2 1/2 usbuuc, ebiblast wuxu sameeyay 3 cuf-ungyo oo takhassus leh, ama lakabyo dhala xubno, lagu magacaabo ectoderm, endoderm, iyo mesoderm.

Ectoderm waxa ka soo baxa qaabab badan ay ka mid yihiin maskaxda, xarigga lafdhabarta, dareemeyaasha, maqaarka, ciddiyaha, iyo timaha.

Endoderm wuxu sameeyaa dahaarka qaabka neefsashada iyo dheefshiid mareenka, waxana ka sameysmo xubnaha ugu waaweyn sida beerka iyo beer-ku-taasha.

Mesoderm wuxu sameeyaa wadnaha, kalyaha, lafaha, carjawda, muruqyada, unugyada dhiigga, iyo qaabab kale.

All ages referenced to fertilization, not last menstrual period.
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