Why No C1 Dermatome?
Your Dermatomes Your Body Has 30 Dermatomes. You May Have Noticed That This Is One Less Than the Number of Spinal Nerves. This Is Because the C1 Spinal Nerve...
Why isn't there a C1 dermatome?
Each somite has a corresponding spinal nerve, and by extension, a corresponding dorsal root of a spinal nerve that innervates a dermatome. ... C1 is the only spinal nerve that does not have an associated dermatome as in many individuals, there is no dorsal root for spinal nerve C1.
What is the dermatome for C1?
There are 8 cervical nerves (note C1 has with no dermatome), 12 thoracic nerves, 5 lumbar nerves and 5 sacral nerves. Each of these spinal nerves relay sensation from a particular region of the skin to the brain.