Skin at the level of umbilicus is supplied by the spinal nerve
The dermatome T10 is at the level of Umbilicus.The area of skin supplied by a dorsal root of a spinal nerve is called as "Dermatome".They represent specific regions of reception of sensory impulses.Reference: Chaurasia; 6th edition
T 9
T 10
T 11
T 12
Abdomen and pelvis