The part of the uterus that will become the maternal portion of the placenta is the:
A)ectometrium
B)myometrium
C)endometrium
D)serometrium

Question

Quizplus · Accepted Answer

The endometrium is the inner lining of the uterus that thickens in preparation for implantation of a fertilized egg. The maternal portion of the placenta develops from the endometrium, specifically from the specialized cells known as the decidua, which forms after implantation. The ectometrium, myometrium, and serometrium are not involved in the formation of the placenta.

The Part of the Uterus That Will Become the Maternal