The placenta has been described as a pancake-shaped organ that attaches to the inside of the uterus and is connected to the baby by the umbilical cord. The placenta produces pregnancy-related hormones, including chorionic gonadotropin (hCG), estrogen, and progesterone.
The placenta is responsible for working as a trading post between the mother’s and the baby’s blood supply. Small blood vessels carrying the fetal blood run through the placenta, which is full of maternal blood. Nutrients and oxygen from the mother’s blood are transferred to the baby’s blood, while waste products are transferred from the baby’s blood to the maternal blood, without the two blood supplies mixing.