what is the difference between trophoblast and inner cell mass ?

Dear student,
Please find below the solution to the asked query

The cells in the blastocyst are arranged into an outer called trophoblast and an inner cell mass called
embryoblast or pluriblast. 
  • Trophoblast is an outer layer of the blastocyst stage of embryo that plays a crucial role during implantation and placentation. The cells of trophoblast layer are the first to form from fertilised egg and provide nutrition to the embryo.
  • The mass of cells present inside the trophoblast layer that differentiates to form the embryo is called inner cell mass. It is attached to the trophoblast.
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Hope this information will clear your doubts about the difference between trophoblast and inner cell mass.
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