The navel: Fascinating facts about body parts. The navel, a.k.a. the belly button(or, more clinically, the umbilicus) is really just a scar that marks the spot where theumbilical cord was attached.
The navel (clinically known as the umbilicus, colloquially known as the belly button, or tummy button) is a protruding, flat, or hollowed area on the abdomen at the attachment site of the umbilical cord. All placental mammals have a navel.
Your mother's food and oxygen goes through her blood to the uterus where they are exchanged to your blood, which carries the nutrients from the placenta, down the umbilical cord, through your navel, and finally into your body..