This animation illustrate the formation of the placenta and blood barrier and their role in providing the embryo with nutrients and oxygen, removing waste products, and preventing harmful substance from entering in.
Review Date:
7/4/2019
Reviewed By:
John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.