All exchanges between mother and embryo occur _.
A) through the allantois
B) through the amniotic fluid
C) as maternal and fetal blood mix in the placenta
D) across the chorionic membranes

Question

Quizplus · Accepted Answer

The exchanges between mother and embryo occur across the chorionic membranes, where nutrients, gases, and waste products are exchanged without the blood of the mother and embryo directly mixing.

All Exchanges Between Mother and Embryo Occur _