How does the embryo get nourishment inside the mother’s body?

The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta. This is disc shaped tissue which is embedded in the uterine wall. Placenta contains villi on the embryo’s side of the tissue and blood spaces on mother’s side surrounding the villi. It provides a large surface area for food and oxygen to pass from mother to the embryo and waste products from embryo to mother.