Diseases

Accessory Nerve Diseases

Diseases of the eleventh cranial (spinal accessory) nerve. This nerve originates from motor neurons in the lower medulla (accessory portion of nerve) and upper spinal cord (spinal portion of nerve). The two components of the nerve join and exit the skull via the jugular foramen, innervating the sternocleidomastoid and trapezius muscles, which become weak or paralyzed if the nerve is injured. The nerve is commonly involved in MOTOR NEURON DISEASE, and may be injured by trauma to the posterior triangle of the neck.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Diseases of the eleventh cranial (spinal accessory) nerve. This nerve originates from motor neurons in the lower medulla (accessory portion of nerve) and upper spinal cord (spinal portion of nerve). The two components of the nerve join and exit the skull via the jugular foramen, innervating the sternocleidomastoid and trapezius muscles, which become weak or paralyzed if the nerve is injured. The nerve is commonly involved in MOTOR NEURON DISEASE, and may be injured by trauma to the posterior triangle of the neck.

MeSH Record

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Synonyms

6 entry terms
  • Cranial Nerve Eleven Diseases
  • Cranial Nerve Eleven Disorders
  • Cranial Nerve XI Diseases
  • Eleventh Cranial Nerve Disease
  • Spinal Accessory Nerve Diseases
  • Accessory Nerve Disease

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

neopl: coord IM with CRANIAL NERVE NEOPLASMS (IM) + histol type of neopl (IM)

MeSH Record

History Note

2000

MeSH Record

Previous Indexing

  • Accessory Nerve (1965-1999)
  • Cranial Nerve Diseases (1981-1999)

MeSH Hierarchy

Tree Number

  1. C10w.292w.175w

AMA Style

References

  1. National Library of Medicine. Accessory Nerve Diseases. Medical Subject Headings (MeSH). 2026. Unique ID D020436. http://id.nlm.nih.gov/mesh/2026/D020436
  2. Accessory Nerve Diseases. In: Wikipedia. https://en.wikipedia.org/wiki/Accessory_nerve_disorder
  3. Accessory Nerve Diseases. In: Wikidata. https://www.wikidata.org/wiki/Q4672538