1. Placenta is a tissue formed by the cells from the embryo and the mother.
2. It is formed around 12 weeks of pregnancy and becomes an important structure for nourishment of the embryo.
3. Placenta is a disc which is embedded in the uterine wall. It contains villi on the embryo’s side of the tissue.
4. On the other side mother’s blood spaces are present.
5. This provides a large surface area for diffusion of glucose, oxygen and other nutrients from the mother of the embryo.
