Epistemis

yolk sac

Embryology · Annexes and placenta

Schematic representation of early embryonic development. During early embryo development, the extraembryonic mesoderm and the exocoelomic cavity (EC) relate the trophoblast (T) to the amnion and the secondary yolk sac (YS). The existence of two extra-embryonic axes, an exocoelomic-amniotic axis and a trophoblastic-yolk sac axis could be proposed. This would enable the formation of the intraembryon
Schematic representation of early embryonic development. During early embryo development, the extraembryonic mesoderm and the exocoelomic cavity (EC) relate the trophoblast (T) to…

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PreviousNotochord
Category
Annexes and placenta
Difficulty
media
Type
Diagram

Origin: Aller et al. · CC BY 4.0 · Wikimedia Commons · License CC BY 4.0

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