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Amnion and Germ Layers


7 days

From The Biology of Prenatal Development.Buy Now

Script: A mako dayan ciki, sel da ke cikin ya zama layi biyu wato hafoblas da kuma efiblas.

Hafoblas din ne zai zama jakar kwai, shi kuma daya ne daga wadda mace za ta ba wa yaron abinci wa sabon amfrayo.

Sel daga cikin efiblast za su dinki riga mai suna "amnion", a cikin wanda amfrayo da kuma yaron ciki ya nuna har zuwa haihuwa.

A tsakanin mako biyu da rabi, efiblast ya nuna massamman tsokoki guda uku, ko layin jam (germ), wanda ake kira ektodam, da indodem, da kuma mesodam.

Ektodam ne ke canza zuwa iri-iri fannin jiki kamar kwakwalwa, da laka, da jijiyoyi, fata, akaifu, da kuma suma.

Indodem kuma shine ke zama abin rai da kuma daijestiv trak, shi kuma ne ke cikinmulmman cin abubuwa rai kamar hanta da kuma pankras.

Mesodam shi ne zai zama zuciya, kodoji, kasusuwa, guringuntsi, tsokoki, da maikacin jini, da kuma da sauran fannin jiki.

All ages referenced to fertilization, not last menstrual period.
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