Concept
Version 6
Created by Boundless
Cleavage, the Blastula Stage, and Gastrulation
Formation of the blastocyst
The rearrangement of the cells in the mammalian blastula to two layers, the inner cell mass and the trophoblast, results in the formation of the blastocyst.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Fertilization and Early Embryonic Development. October 17, 2013."
http://cnx.org/content/m44846/latest/Figure_43_05_03.jpg
OpenStax CNX
CC BY 3.0.