The outer layer of cells separating the outside world from the blastocoele is called the
A) trophoblast.
B) chorion.
C) inner cell mass.
D) zona pellucida.
E) blastomere.

Question

Quizplus · Accepted Answer

The trophoblast is the outer layer of cells that forms the placenta and separates the blastocoele from the outside world. The other choices are not specifically describing this outer layer of cells.

The Outer Layer of Cells Separating the Outside World from the Blastocoele