The difference between dermatome (area radicularis sensitive) and area nervina
Beside the dermatomes (also called area radicularis sensitiva) there are also area nervina. The area nervina are the skin areas innervated by the sensible branches of the peripheric nerves.
The area radicularis sensitiva is that part of the body, from which the sensory information is led by one dorsal root of spinal nerve (or one cranial nerve). It consists of the dermatome (skin area) and internal organs and muscles area, innervated by the same dorsal root.
The area nervina is that part of the body innervated by one peripheric nerve. Some nerves form nervous plexus and here, as a peripheric nerve we mean the nerve distally to the plexus from which it arises.
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