<prompt> Skin at the level of umbilicus is supplied by the spinal nerveT 9T 10T 11T 12  <response>: 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 