II. Anatomy: Cranial Nerves 9-11

  1. neuroAccessoryCN11.png
  2. entCranialNerve9to11GrayBB791.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  3. entCranialNerve9to11GrayBB793.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  4. entCranialNerve9to11GrayBB794.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

III. Physiology

  1. Innervates Trapezius and Sternocleidomastoid motor

IV. Anatomy: Course

  1. neuroAccessoryCN11.png
  2. Arises in upper spinal cord (not Medulla)
  3. Passes up through foramen magnum
    1. Runs along side vagal nerve (CN 10) briefly
    2. Descends through jugular foramen
  4. Runs backward near Jugular Vein
  5. Descends to upper sternocleidomastoid
  6. Proceeds to posterior triangle of neck to trapezius

V. Exam

  1. Trapezius testing
    1. Patient raises Shoulders against resistance
  2. Sternocleidomastoid Testing
    1. Patient starts with head turned to the side
    2. Attempt to turn head back against resistance

VI. References

  1. Gilman (1989) Manter and Gatz Essentials of Neuroanatomy and Neurophysiology, Davis, p. 87-113
  2. Goldberg (2014) Clinical Neuroanatomy, p. 24-39
  3. Netter (1997) Atlas Human Anatomy, ICON Learning, p. 110-129

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Ontology: Accessory nerve structure (C0000905)

Definition (NCI) The 11th cranial nerve, which sends motor impulses to the muscles of the upper thorax, back, shoulders, and pharynx.
Definition (NCI_CDISC) The eleventh cranial nerve.
Definition (MSH) The 11th cranial nerve which originates from NEURONS in the MEDULLA and in the CERVICAL SPINAL CORD. It has a cranial root, which joins the VAGUS NERVE (10th cranial) and sends motor fibers to the muscles of the LARYNX, and a spinal root, which sends motor fibers to the TRAPEZIUS and the sternocleidomastoid muscles.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D000055
SnomedCT 43718008, 15119000
English Accessory Nerve, Accessory Nerve, Spinal, Accessory Nerves, Accessory Nerves, Spinal, Nerve, Accessory, Nerve, Spinal Accessory, Nerves, Accessory, Nerves, Spinal Accessory, Spinal Accessory Nerve, Spinal Accessory Nerves, Cranial Nerve XI, Cranial Nerve, Eleventh, Cranial Nerves, Eleventh, Eleventh Cranial Nerve, Eleventh Cranial Nerves, Nerve, Eleventh Cranial, Nerves, Eleventh Cranial, cranial nerve XI, Accessory nerve [XI], Nervus accessorius [XI], Pars spinalis nervus accessorius, Cervical accessory nerve, Spinal accessory nerve tree, Spinal part of accessory nerve, Set of accessory nerves, Radix spinalis nervus accessorius, Willis' nerve, cranial nerve xi, spinal accessory nerves, spinal accessory nerve, accessory nerve, eleventh cranial nerve, spinal accessory nerve-2, Nervus accessorius, ACCESSORY NERVE, SPINAL ACCESSORY NERVE, CRANIAL ACCESSORY NERVE, Nervus Accessorius, Accessorius, Nervus, Nerve XI, Nerve XIs, Eleventh cranial nerve, Accessory nerve, Spinal accessory nerve, Cranial nerve XI, Accessory nerve structure (body structure), Accessory nerve structure, Accessory nerve, NOS, Nerve (Accessory), Accessory nerve (XI)
French Onzième nerf crânien, Nerf crânien XI, Nerf spinal accessoire, Nerf crânien 11, Onzième paire crânienne, Nerf accessoire de Willis, Nerf accessoire
Swedish Accessorisk nerv
Czech nervus accessorius, XI. hlavový nerv, přídatný nerv, nerv přídatný
Portuguese Nervo Acessório Espinal, XI Nervo Craniano, Nervo Acessório Espinhal, XI Par Craniano, Décimo Primeiro Nervo Craniano, Nervo Acessório, Nervo Craniano XI
Finnish Lisähermo
German ELFTER HIRNNERV, Hirnnerv XI, Nervus accessorius, Spinaler Nervus accessorius, XI. Hirnnerv
Italian Undicesimo nervo cranico, Nervo accessorio spinale, Nervo cranico XI, Nervo accessorio
Latvian Papildnervs
Polish Nerw XI, Nerw dodatkowy
Japanese 脊髄副神経, 副神経, 第11脳神経
Norwegian Nervus accessorius, Hjernenerve 11, Ledsagernerve, 11. hjernenerve
Spanish XI Par Craneal, Nervio Craneal XI, XI par craneal, estructura del nervio accesorio (estructura corporal), estructura del nervio accesorio, nervio accesorio, nervio craneal XI, nervio espinal, undécimo nervio craneal, undécimo par craneal, undécimo par craneano, nervio accesorio espinal, nervio accesorio (XI), Nervio Accesorio, Nervio Espinal Accesorio, Onceavo Nervio Craneal, XI Nervio Craneal
Dutch Nervus accessorius, Nervus cranialis XI, XIe hersenzenuw