Inferior ganglion of vagus nerve
Pathway of upper portions of glossopharyngeal, vagus, and accessory nerves. The inferior ganglion of the vagus nerve is labeled as ‘Gang. Nodosum’.
Details
Fromvagus nerve
Identifiers
Latinganglion inferius nervi vagi,
ganglion nodosum
MeSHD009620
TA98A14.2.01.157
TA26336
FMA6230
Anatomical terms of neuroanatomy

The inferior ganglion of the vagus nerve (also known as the nodose ganglion) is one of the two sensory ganglia of each vagus nerve (cranial nerve X). It contains neuron cell bodies of general visceral afferent fibers and special visceral afferent fibers.[1] It is situated within the jugular fossa just below the skull. It is situated just below the superior ganglion of vagus nerve.[2]

Anatomy

The inferior ganglion of vagus nerve is elongated. It is larger than the superior ganglion of vagus nerve. It is situated within the jugular fossa,[2] just inferior to the jugular foramen.[1]

Structure

The inferior ganglion contains the neuron cell bodies of all sensory fibres of the CN X except those of the auricular branch of vagus nerve.[2]

The neurons in the inferior ganglion of the vagus nerve are pseudounipolar and provide sensory innervation (general somatic afferent and general visceral afferent).[3]

The axons of the neurons which innervate the taste buds of the epiglottis synapse in the rostral portion of the solitary nucleus (gustatory nucleus).[3]

The axons of the neurons which provide general sensory information synapse in the spinal trigeminal nucleus.[3]

The axons of the neurons which innervate the aortic bodies, aortic arch, respiratory and gastrointestinal tract, synapse in the caudal part of the solitary nucleus.[citation needed]

Distribution

The neurons in the inferior ganglion of the vagus nerve innervate the taste buds on the epiglottis, the chemoreceptors of the aortic bodies and baroreceptors in the aortic arch. Most importantly, the majority of neurons in the inferior ganglion provide sensory innervation to the heart, respiratory and gastrointestinal tracts and other abdominal organs such as the urinary bladder.[citation needed]

Development

The neurons in the inferior ganglion of the vagus nerve are embryonically derived from epibranchial neurogenic placodes.[citation needed]

Clinical Significance

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References

  1. ^ a b Burt, Alvin M (1993). Textbook of Neuroanatomy (1st ed.). Philadelphia: W.B. Saunders. pp. 423–427. ISBN 0721621996. OCLC 24503849.
  2. ^ a b c Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). Elsevier Australia. p. 499. ISBN 978-0-7295-3752-0.
  3. ^ a b c Rubin, Michael (2016-09-28). Netter's Concise Neuroanatomy. Safdieh, Joseph E.,, Netter, Frank H. (Frank Henry), 1906-1991 (Updated ed.). Philadelphia, PA. pp. 259–260. ISBN 9780323480918. OCLC 946698976.((cite book)): CS1 maint: location missing publisher (link)
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