n.
A division of the acoustic nerve that conducts impulses related to maintaining balance to the brain.
[From the role of the vestibule to the ear in maintaining balance.]
vestibular nerve
| Dictionary: vestibular nerve |
n.
A division of the acoustic nerve that conducts impulses related to maintaining balance to the brain.
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| Dental Dictionary: vestibular nerve |
n
VIII
One of the two major branches of the eighth cranial nerve; a special sensory nerve for the sense of balance and the transmission of space-orientation impulses from the semicircular canals to the brain.
| Medical Dictionary: vestibular nerve |
n.
The superior part of the vestibulocochlear nerve peripheral to the vestibulocochlear nerve root, composed of nerve processes that have their terminals on hair cells of the ampullae of the semicircular ducts and the maculas of the saccule and utricle and the bipolar neurons of the vestibular ganglion.
| Wikipedia: Vestibular nerve |
| Nerve: Vestibular nerve | |
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| Inner ear illustration showing semicircular canal, hair cells, ampulla, cupula, vestibular nerve, & fluid | |
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| Terminal nuclei of the vestibular nerve, with their upper connections. (Schematic.) 1. Cochlear nerve, with its two nuclei. 2. Accessory nucleus. 3. Tuberculum acusticum. 4. Vestibular nerve. 5. Internal nucleus. 6. Nucleus of Deiters. 7. Nucleus of Bechterew. 8. Inferior or descending root of acoustic. 9. Ascending cerebellar fibers. 10. Fibers going to raphé. 11. Fibers taking an oblique course. 12. Lemniscus. 13. Inferior sensory root of trigeminal. 14. Cerebrospinal fasciculus. 15. Raphé. 16. Fourth ventricle. 17. Inferior peduncle. Origin of striæ medullares. |
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| Latin | nervus vestibularis |
| Gray's | subject #203 906 |
| From | Vestibulocochlear nerve |
| MeSH | Vestibular+Nerve |
The vestibular nerve is one of the two branches of the Vestibulocochlear nerve (the cochlear nerve being the other). It goes to the semicircular canals via the vestibular ganglion. It receives positional information.
Axons of the vestibular nerve synapse in the vestibular nucleus on the lateral floor and wall of the fourth ventricle in the pons and medulla.
It arises from bipolar cells in the vestibular ganglion, ganglion of Scarpa, which is situated in the upper part of the outer end of the internal auditory meatus.
Contents |
Branches
The peripheral fibers divide into three branches (some sources list two)[1]:
- the superior branch passes through the foramina in the area vestibularis superior and ends in the utricle and in the ampullae of the superior and lateral semicircular ducts;
- the fibers of the inferior branch traverse the foramina in the area vestibularis inferior and end in the saccule;
- the posterior branch runs through the foramen singulare and supplies the ampulla of the posterior semicircular duct.
See also
Additional images
 Illustration of otolith organs |
 Ear internal anatomy |
References
External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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 | inferior vestibular nucleus (neuroscience) |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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Mentioned in
- inferior vestibular nucleus (neuroscience)
- Vestibular (in medicine)
- acoustic nerve
- vestibular apparatus (anatomy)
