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Germ Layers and Organ Formation


14 days

From The Biology of Prenatal Development.Buy Now

Script: Dopo circa 2 settimane e 1/2, l'epiblasto ha formato 3 tessuti specializzati, o strati germinativi, detti ectoderma, endoderma e mesoderma.

L'ectoderma crea numerose strutture come il cervello, il midollo spinale, i nervi, la pelle, le unghie ed i capelli.

L'endoderma produce il rivestimento interno dell'apparato respiratorio e digerente, e produce parti degli organi principali come il fegato ed il pancreas.

Il mesoderma forma il cuore, i reni, le ossa, la cartilagine, i muscoli, le cellule del sangue, ed altre strutture.

All ages referenced to fertilization, not last menstrual period.
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