Outer cell mass is (AIIMA May 2008)
Pg. 171; Gray's Anatomy (40th Ed.)
Outer cell mass is trophoblast.
Trophoblast is involved in the formation of placenta.
Inner cell mass - give rise to epiblast - epiblast forms the three germ layers - ectoderm,endoderm and mesoderm (mesoblast) subsequently.