Hello everyone,

 

I have a quick question, let's say there is a L1 dermatome, which is a large area. Now my question is does L1 nerve divide into many branches to supply this area, also do these branches carry only sensory nerves?

 

Thanks

Dermatome refers to the pattern of sensory innervation from the dorsal root of a particular spinal cord segment. The ventral motor root of the same segment joins with the sensory root to travel to the periphery. Some axons from adjacent dermatomes usually join in a peripheral nerve to reach nearby regions while smaller nerve branches divide off at appropriate points to supply their region with sensory and motor innervation. The L1 branch doesn't provide very much motor innervation. SM