After fertilization, zygote foes through a series of mitotic division, with very little time between each
Reaches around 64 cells (solid balls), called a...?
Morula
Morula is not much larger than original single cell
Begins to hallow out become blastocyst
Blastocyst will secrete digestive enzymes to burrow into uterine lining (recall it should be thickest now) about 1week after fertilization
Blastocyst will secrete digestive enzymes to burrow into uterine lining (recall it should be thickest now) about 1 week after fertilization. This is called...?
Implantation
Blastocyst can begin to differentiate
Cluster of cells form inside blastocyst
This inner cell mass will become the embryo
Trophoblast surrounding this will become the placenta and umbilical cord
