Question

what happens to the blastocyst immediately after implantaion?

Answer 1

Embryo implantation in humans. Afterfertilization the human embryo begins a 4 day long journey down the fallopian tube and into the uterus. When the embryo reaches the blastocyst stage it develops two distinct populations of cells. The outer cell mass,called the trophectoderm, and the inner cell mass.