Quick Facts
Origin: Emerges from sacral hiatus.
Course: Inferiorly towards the coccygeal plexus.
Branches: No branches.
Supply: Motor innervation to muscles of the perineum and external anal sphincter.
Related parts of the anatomy
Origin
The anterior root of the coccygeal nerve originates as a series of rootlets that emerge from the ventrolateral surface of the spinal cord. These quickly merge to form the anterior root.
Course
The anterior root emerges from the sacral hiatus and runs inferiorly to form the coccygeal plexus, with the fifth sacral nerve, close to the coccyx bone.
Branches
There are no branches of the anterior nerve roots.
Supplied Structures & Function
The anterior root of the coccygeal nerves sends motor innervation to muscles of the perineum and external anal sphincter.
