The skin around the waist at the level of the umbilicus is supplied by the tenth thoracic spinal nerve (T10 dermatome).

[5] The belly button is unique to each individual due to it being a scar, and various general forms have been classified by medical practitioners.

The navel (specifically abdominal wall) would be considered an umbilical hernia if the protrusion were 5 centimeters or more.

Female navel exposure was banned in some jurisdictions, but community perceptions have changed to this now being acceptable.

While the West was relatively resistant to navel-baring clothing until the 1980s, it has long been a fashion with Indian women,[23] often displayed with saris or lehengas.

During the early Jōmon period in northern Japan, three small balls indicating the breasts and navel were pasted onto flat clay objects to represent the female body.