0 an area of the skin supplied by a single spinal nerve
1 a tool used to take very thin slices of skin from one part of the body to repair skin in another area
Pain typically occurs in the distribution of a dermatome and goes below the knee to the foot.
This overlap of innervation is poorly handled by the standard dermatome map which physicians rely on to trace pain back to its source.
It is formed when a dermamyotome (the remaining part of the somite left when the sclerotome migrates), splits to form the dermatome and the myotome.
Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve.
The onion skin distribution is entirely different from the dermatome distribution of the peripheral branches of the fifth nerve.
Somites give rise to the myotome (muscle tissue), sclerotome (cartilage and bone), and dermatome (subcutaneous tissue of the skin).
Each somite has 3 divisions, sclerotome (which forms vertebrae), dermatome (which forms skin), and myotome (which forms muscle).
Because the sclerotome differentiates before the dermatome and the myotome, the term "dermomyotome" refers to the combined dermatome and myotome before they too separate out.
