Terminology Service for NFDI4Health
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accessory XI nerve

Go to external page http://purl.obolibrary.org/obo/UBERON_0002019

A cranial nerve that originates from neurons in the medulla and in the cervical spinal cord. [ http://orcid.org/0000-0002-6601-2165 ]

Term info

Label

accessory XI nerve

Synonyms
  • Willis' nerve
  • accessory XI
  • accessory XI nerve
  • accessory nerve
  • accessory nerve [XI]
  • cervical accessory nerve
  • cranial nerve XI
  • eleventh cranial nerve
  • nervus accessorius [XI]
  • pars spinalis nervus accessorius
  • radix spinalis nervus accessorius
  • spinal accessory nerve
  • spinal accessory nerve tree
  • spinal part of accessory nerve
database cross reference
Subsets

uberon_slim, pheno_slim

latin term
nervus accessorius [XI] [ FMA : 6720 FMA : TA ]

latin term
radix spinalis nervus accessorius [ FMA : TA FMA : 6720 ]

latin term
pars spinalis nervus accessorius [ FMA : 6720 FMA : TA ]

depicted by

http://upload.wikimedia.org/wikipedia/commons/5/5e/Gray791.png

dubious for taxon

http://purl.obolibrary.org/obo/NCBITaxon_8292

external definition

A small motor nerve which emerges from the lateral wall of the medulla with the roots of the vagus nerve, and innervates a single pectoral suspensory muscle, the m.cucullaris., Cranial nerve that innervates the sternocleidomastoid and trapezius complex of muscles. [Bemis_WE, Functional_Anatomy_of_the_Vertebrates:_An_Evolutionary_Perspective, Glossary_G-1, Grande_L, Liem_KF, Third_Edition_(2001)_Orlando_Fla.:_Harcourt_College_Publishers, Walker_WF][VHOG], Small motor nerve which innervates a single pectoral suspensory muscle, the m. cucullaris.[AAO]

external ontology notes

FMA has distinct cranial and spinal parts - WP says 'Traditional descriptions of the accessory nerve divide it into two parts: a spinal part and a cranial part.[1] However, because the cranial component rapidly joins the vagus nerve, becoming an integral part of said nerve, modern descriptions often consider the cranial component to be part of the vagus nerve and not part of the accessory nerve proper.[2]

has related synonym

accessory spinal nerve, CN-XI

homology notes

Cranial nerves XI and XII evolved in the common ancestor to amniotes (non-amphibian tetrapods) thus totalling twelve pairs.[well established][VHOG]

id

UBERON:0002019

taxon notes

In mice, the spinal branch of this motor nerve innervates the trapezius and the sternocleidomastoid muscles. The cranial branch joins the vagus nerve and innervates the same targets as the vagus nerve