What protects and nourish the developing embryo?

The developing embryo is protected and nourished by the amniotic sac, which contains amniotic fluid that cushions the embryo and provides a stable environment. The placenta plays a crucial role by facilitating the exchange of nutrients, gases, and waste between the mother and the embryo, while also producing hormones that support pregnancy. The umbilical cord connects the embryo to the placenta, ensuring a continuous supply of essential substances. Together, these structures ensure the embryo's growth and development throughout gestation.