Posterior ramus of spinal nerve
Ramus posterior nervi spinalis
- Latin synonym: Ramus dorsalis nervi spinalis
- Synonym: Dorsal ramus of spinal nerve
- Related terms: Posterior ramus
Definition
After emerging from the intervertebral foramen, each spinal nerve gives off a small meningeal branch which reënters the vertebral canal through the intervertebral foramen and supplies the vertebræ and their ligaments, and the bloodvessels of the medulla spinalis and its membranes. The spinal nerve then splits into a posterior ramus (dorsal division), and an anterior ramus (ventral division), each receiving fibres from both nerve roots.
References
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
