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Pharyngeal branch of vagus nerve

From Wikipedia, the free encyclopedia

Pharyngeal branch of vagus nerve
Plan of upper portions of glossopharyngeal, vagus, and accessory nerves. (Pharyngeal visible at center right.)
Details
Fromvagus nerve
Topharyngeal plexus
Innervatespharynx
Identifiers
Latinramus pharyngeus nervi vagi
TA98A14.2.01.158
TA26337
FMA6234
Anatomical terms of neuroanatomy

The pharyngeal branch of the vagus nerve is the principal motor nerve of the pharynx. It represents the motor component of the pharyngeal plexus of vagus nerve and ultimately provides motor innervation to most of the muscles of the soft palate (all but the tensor veli palatini muscle), and of the pharynx (all but the stylopharyngeus muscle).[1]

The neuron cell bodies of the axons of the pharyngeal branch reside in the nucleus ambiguus. The pharyngeal branch arises from the superior portion of the inferior ganglion of vagus nerve. It passes in between the external carotid artery and internal carotid artery; upon reaching the superior border of the middle pharyngeal constrictor muscle the nerve ramifies into numerous filaments that contribute to the formation of the pharyngeal plexus.[1]

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Transcription

Anatomy

Origin

Putative contribution from cranial root of accessory nerve (CN XI)

It is unclear whether the cranial root of accessory nerve (CN XI) makes a significant contribution of nerve fibres to the CN X that would then proceed to constitute the pharyngeal branch.[1]

See also

References

  1. ^ a b c Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 713. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)

External links


This page was last edited on 18 July 2023, at 22:12
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