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The Endowment for Human Development
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Germ Layers and Organ Formation


14 days

From The Biology of Prenatal Development.Buy Now

Script: Nakon otprilike 2 1/2 nedelje, epiblast je već stvorio 3 specijalna tkiva, ili klicina omotača koja se zovu ektoderm, endoderm, i mezoderm.

Iz ektoderma se razvijaju brojne strukture, između ostalog mozak, kičmena moždina, nervi, koža, nokti, i kosa.

Endoderm stvara osnove disajnog sistema kao i digestivnog trakta, izgrađuje delove velikih organa kao što su jetra i pankreas, tj. gušterača.

Mezoderm formira srce, bubrege, kosti, hrskavičavo tkivo, mišiće, krvne ćelije, i druge strukture.

All ages referenced to fertilization, not last menstrual period.
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Amnion and Germ Layers
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