11. What scientific term means the disc-shaped structure with many blood vessels in it that the embryo forms between itself and the uterine wall? It consists of many finger-like extensions which attach to the uterus to increase the surface area for exchange of gases, nutrients and wastes between mom and embryo.
A) endometrium
B) chorion
C) placenta
D) amnion
Slichter
------ [Answer] ------ 