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Dermatome
Summary:
A dermatome is a localized area of skin that is has its sensation via a single nerve from a single nerve root of the spinal cord. The spinal cord branches off into individual nerve roots that pass through openings between the vertebra. Each nerve root receives sensory signals from a specific area of the body called a dermatome. This illustration shows the distribution of dermatomes across the skin surface. The letter-number combinations show the relationship between the area shown in the illustration and the corresponding spinal sensory nerves. The vertebra are classified as C for cervical, T for thoracic, L for lumbar, and S for sacral.
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