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

The embryo gets its nourishment from the mother 's blood with the help of a special disc-shaped tissue embedded in the uterine wall called the placenta. It contains villi on the embryo's side and blood vessels surrounding villi on the mother’s side. Through the placenta, glucose and oxygen pass from the mother to the embryo. Also, the waste substances are removed through placenta into the mother's blood