Here's how it works:

* The placenta is an organ that develops in the uterus during pregnancy. It's connected to the embryo by the umbilical cord.

* The placenta acts as a bridge between the mother's and the baby's bloodstreams. It allows for the exchange of nutrients, oxygen, and waste products.

* The mother's blood carries nutrients and oxygen to the placenta. These are then transferred to the baby's bloodstream through the umbilical cord.

* The placenta also removes waste products from the baby's blood, which are then carried back to the mother's system for disposal.

In short, the placenta is the vital link that ensures the developing embryo receives everything it needs to grow and thrive.