Embryonic Cell Division

I'll keep adding interesting facts as I come upon them!

After conception happens and the fertilized egg is traveling down the fallopian tube into the uterus, cells are rapidly dividing.  One cell becomes two becomes four becomes eight becomes sixteen and on and on.  But when the blastocyte (what the fertilized egg is called at this stage) embeds in the uterine wall, the cells stop dividing in order to give full attention to implanting.  Up until this time, the cell division creates all cells that are exactly alike.  But when the implanted blastocyte restarts its division, the cells now are all different, relating to what part of the body they will become.