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The Endowment for Human Development
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: Apmēram 2 1/2 nedēļu laikā, epiblasta izveido 3 specifiskus audus, jeb dīgļlapas: ektodermu, endodermu un mezodermu.

Ektoderma ģenerē vairākas struktūras ieskaitot smadzenes, muguras smadzenes, nervaudus, ādu, nagus un matus.

Endoderma veido elpošanas sistēmas un gremošanas trakta epitēlijaudus un svarīgu orgānu daļas, piem., aknām un aizkuņģa dziedzerim.

Mezoderma veido sirdi, nieres, kaulus, skrimšļus, muskuļus, asins šūnas un citas struktūras.

All ages referenced to fertilization, not last menstrual period.
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