Answer the following question given this paragraph: 

The cells of the blastocyst form an inner cell mass and an outer cell layer, as shown in Figure below . The inner cell mass is called the embryoblast. These cells will soon develop into an embryo. The outer cell layer is called the trophoblast. These cells will develop into other structures needed to support and nourish the embryo.


Q: The cells of the blastocyst form an inner cell mass called the what?


A:
embryoblast