Coccygeal Plexus
Coccygeal plexus originate from S4, S5, Co1 spinal nerves. (It is interconnected with the lower part of Sacral plexus). The only nerve of the plexus is the coccygeal nerve, that serves sensory innervation of the skin in the coccygeal region.
Read more about this topic: Nerve Plexus