Embryology pp 26-31 | Cite as

Early Development of the Conceptus

  • Robert E. Coalson
  • James J. Tomasek
Part of the Oklahoma Notes book series (OKLAHOMA)

Abstract

Before implantation of the blastocyst is complete, a small, fluid-filled space appears within the cluster of blastomeres forming the inner cell mass (embryoblast); this space is the amniotic cavity. As the amniotic cavity enlarges, the remaining blastomeres of the inner cell mass become rearranged to form a flattened disk consisting of two layers of simple epithelium arranged back-to-back; this structure is the bilaminar embryo. Differentiation of the embryonic disk allows the developing conceptus to be divided into embryonic and extraembryonic areas; subsequent developmental changes will continue to accentuate the boundaries between embryonic and extraembryonic regions of the conceptus.

Keywords

Explosive Teratoma 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • Robert E. Coalson
    • 1
  • James J. Tomasek
    • 1
  1. 1.Department of Anatomical Sciences, College of Medicine, Health Sciences CenterThe University of OklahomaOklahoma CityUSA

Personalised recommendations