Fingerlike placental structures where oxygen and nutrients from the maternal blood supply diffuse into the embryonic blood.
A) syncytiotrophoblast
B) allantois
C) amnion
D) chorionic villi
E) extraembryonic membrane

Question

Quizplus · Accepted Answer

Chorionic villi are fingerlike projections from the chorion, the outermost membrane surrounding the embryo, which facilitate the exchange of oxygen and nutrients between the maternal blood supply and the embryonic blood.

Fingerlike Placental Structures Where Oxygen and Nutrients from the Maternal