What is the small scar where the umbilical cord was attached called?

The small scar where the umbilical cord was attached is called the umbilicus, commonly known as the belly button. After birth, the umbilical cord is clamped and cut, leaving behind this small scar that can be either an innie or an outie, depending on how the tissue heals. The umbilicus marks the spot where the fetus was connected to the placenta for nutrient and oxygen exchange during pregnancy.