Attachment to and Penetration of the Endometrium by the Blastocyst

Question

Attachment to and penetration of the endometrium by the blastocyst is referred to as
A)cleavage.
B)implantation.
C)placentation.
D)embryogenesis.
E)fertilization.

Accepted Answer

Implantation is the attachment of the blastocyst (developing embryo) to the endometrium (inner lining of the uterus) which then allows for further development and growth of the fetus. Cleavage refers to the process of rapid cell division after fertilization, placentation is the formation and development of the placenta, embryogenesis is the formation and development of the embryo, and fertilization is the union of sperm and egg to form a zygote.