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Accessory Nucleus Information

The spinal accessory nucleus lies within the cervical spinal cord (C1-C5) in the ventral horn. The nucleus ambiguus is classically said to provide the "cranial component" of the accessory nerve.

However, the very existence of this cranial component has been recently questioned and seen as contributing exclusively to the vagus nerve.

The terminology continues to be used in describing both human anatomy,[1] and that of other animals.[2]

Additional images

References

  1. ^ 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. http://www.blackwell-synergy.com/openurl?genre=article&sid=nlm:pubmed&issn=0021-8782&date=2000&volume=196&issue=&spage=263.
  2. ^ 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. http://www.blackwell-synergy.com/openurl?genre=article&sid=nlm:pubmed&issn=0021-8782&date=2007&volume=210&issue=4&spage=428.

External links

· · Nerves of head and neck: the cranial nerves and nuclei (TA A14.2.01, GA 9.855)
olfactory (AON->I) olfactory bulb · olfactory tract
optic (LGN->II) optic chiasm · optic tract
oculomotor (ON, EWN->III) superior branch (parasympathetic root of ciliary ganglion/ciliary ganglion) · inferior branch
trochlear (TN->IV) no significant branches
trigeminal (PSN, TSN, MN, TMN->V) trigeminal ganglion • ophthalmic • maxillary • mandibular
abducens (AN->VI) no significant branches
facial (FMN, SN, SSN->VII)
near origin nervus intermedius • geniculate
inside facial canal greater petrosal (pterygopalatine ganglion) · nerve to the stapedius · chorda tympani (lingual nerve, submandibular ganglion)
at stylomastoid foramen posterior auricular · suprahyoid (digastric, stylohyoid) · parotid plexus (temporal, zygomatic, buccal, mandibular, cervical)
vestibulocochlear (VN, CN->VIII) cochlear (striae medullares, lateral lemniscus) • vestibular (Scarpa's ganglion)
glossopharyngeal (NA, ISN, SN->IX)
before jugular fossa ganglia (superior, inferior)
after jugular fossa tympanic (tympanic plexus, lesser petrosal, otic ganglion) • stylopharyngeal branch • pharyngeal branches • tonsillar branches • lingual branches • carotid sinus
vagus (NA, DNVN, SN->X)
before jugular fossa ganglia (superior, inferior)
after jugular fossa meningeal branch · auricular branch
neck pharyngeal branch (pharyngeal plexus) · superior laryngeal (external, internal) · recurrent laryngeal (inferior) · superior cervical cardiac
thorax inferior cardiac · pulmonary · vagal trunks (anterior, posterior)
abdomen celiac · renal · hepatic · anterior gastric · posterior gastric
accessory (NA, SAN->XI) cranial · spinal
hypoglossal (HN->XII) lingual branches

: PNS

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· · Anatomy of torso (primarily): the spinal cord (TA 14.1.02, GA 9.749)
External, dorsal Posterior median sulcus · Posterolateral sulcus
Grey matter/ Rexed laminae
I–VI: Posterior horn I: Marginal nucleus · II: Substantia gelatinosa of Rolando · III+IV: Nucleus proprius · Spinal lamina V · Spinal lamina VI
VII: Lateral horn Intermediolateral nucleus · Posterior thoracic nucleus
VIII–IX: Anterior horn Interneuron · Alpha motor neuron (Onuf's nucleus)
X: Other Central gelatinous substance · Gray commissure Central canal
White matter
somatic/ ascending (blue)

Posterior/PCML: touch: Gracile · Cuneate

Lateral: proprioception: Spinocerebellar (Dorsal, Ventral) · pain/temp: Spinothalamic (Lateral, Anterior) · Posterolateral (Lissauer) · Spinotectal

Spinoreticular tract · Spino-olivary tract
motor/ descending (red) Lateral: Corticospinal (Lateral) · Ep (Rubrospinal, Olivospinal) Anterior: Corticospinal (Anterior) · Ep (Vestibulospinal, Reticulospinal, Tectospinal)
both Anterior white commissure
External, ventral Anterior median fissure · Anterolateral sulcus
External, general Cervical enlargement · Lumbar enlargement · Conus medullaris · Filum terminale · Cauda equina

: CNS

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