The embryo gets nourishment inside the mother's body through a special tissue called the placenta. The placenta is embedded in the uterine wall and contains villi on the embryo's side which increase the surface area for the exchange of nutrients and gases. Nutrients like glucose, water, amino acids, and oxygen pass from the mother's blood through the placenta to the embryo. Meanwhile, waste products and carbon dioxide from the embryo are transferred back to the mother's blood for elimination. The embryo and placenta are connected by the umbilical cord, which facilitates this exchange of materials.