Spinal accessory nucleus
The spinal accessory nucleus lies within the cervical spinal cord (C1-C5) in the posterolateral aspect of the anterior horn. The nucleus ambiguus is classically said to provide the "cranial component" of the accessory nerve.
|Spinal accessory nucleus|
The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Spinal accessory nucleus is at "XI".)
|Latin||nucleus nervi accessorii, nervus spinalis nervi accessorii|
|Anatomical terms of neuroanatomy|
However, the very existence of this cranial component has been recently questioned and seen as contributing exclusively to the vagus nerve.
- Routal RV, Pal GP (2000). "Location of the spinal nucleus of the accessory nerve in the human spinal cord". J. Anat. 196 ( Pt 2) (2): 263–8. doi:10.1046/j.1469-7580.2000.19620263.x. PMC 1468059. PMID 10739022.
- Ullah M, Mansor O, Ismail ZI, Kapitonova MY, Sirajudeen KN (2007). "Localization of the spinal nucleus of accessory nerve in rat: a horseradish peroxidase study". J. Anat. 210 (4): 428–38. doi:10.1111/j.1469-7580.2007.00709.x. PMC 2100289. PMID 17428204.