The birth of a baby is a wonderful and very complex process. Many physical and emotional changes occur for both mother and baby.A baby must make many physical adjustments to life outside the mother's body. Leaving the uterus means that a baby can no longer depend on the mother's blood supply and placenta for important body functions.Before birth, the baby depends on functions from the mother. These include breathing, eating, elimination of waste, and immune protection. When a baby leaves the womb, its body systems must change