Embryonic Plate: Weeks 2-3

on 2.2.08 with 0 comments



Week Two

  1. Embryoblast (bilaminar disk)

Epiblast
Hypoblast
Amniotic cavity
Yolk sac
  1. Trophoblast (Placenta)

Syncytiotrophoblast
Cytotrophoblast

  1. Week Three

  1. Gastrulation

-establishes three germ layers: ectoderm, mesoderm, endoderm (trilaminar disk by day 21); give rise to all tissues and organs

-primitive streak first indication

-all derived from epiblast


Category: Anatomy Notes

POST COMMENT

0 comments:

Post a Comment