From Wikipedia, the free encyclopedia
Vestibular nuclei
Vestibular nuclei
Brain: Vestibular nuclei
rhomboid fossa; the dorso-lateral part of this nucleus is sometimes termed the nucleus of Bechterew. • Modern sources also include a inferior vestibular nucleus and superior vestibular nucleus
Path from medial and lateral nuclei
The fibers of the vestibular nerve enter the medulla oblongata on the medial side of those of the cochlear, and pass between the inferior peduncle and the spinal tract of the trigeminal. They then divide into ascending and descending fibers. The latter end by arborizing around the cells of the medial nucleus, which is situated in the area acustica of the rhomboid fossa. The ascending fibers either end in the same manner or in the lateral nucleus, which is situated lateral to the area acustica and farther from the ventricular floor. Some of the axons of the cells of the lateral nucleus, and possibly also of the medial nucleus, are continued upward through the inferior peduncle to the roof nuclei of the opposite side of the cerebellum, to which also other fibers of the vestibular root are prolonged without interruption in the nuclei of the medulla oblongata. A second set of fibres from the medial and lateral nuclei end partly in the tegmentum, while the remainder ascend in the medial longitudinal fasciculus to arborize around the cells of the nuclei of the oculomotor nerve. Fibres from the lateral vestibular nucleus also pass via the vestibulospinal tract, to anterior horn cells at many levels in the spinal cord, in order to co-ordinate head and trunk movements.
Dissection of brain-stem. Dorsal view. (Caption for "Vestibular nucleus" is visible at left.)
Latin Gray’s Part of System Artery NeuroNames
nuclei vestibulares subject #187 788 Medulla Vestibular system AICA hier-711
The vestibular nuclei are the cranial nuclei for the vestibular nerve.
Subnuclei
There are 4 subnuclei; they are situated at the floor of the fourth ventricle. • The medial vestibular nucleus (dorsal or chief vestibular nucleus), corresponding to the lower part of the area acustica in the rhomboid fossa; the caudal end of this nucleus is sometimes termed the descending or spinal vestibular nucleus. • The lateral vestibular nucleus or nucleus of Deiters, consisting of large cells and situated in the lateral angle of the
See also
• Vestibular nerve
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From Wikipedia, the free encyclopedia
Vestibular nuclei
dorsal view. Motor nuclei in red; sensory in blue. represented; lateral view.
Additional images
External links
Deep dissection of brainstem. Lateral view. • Neuroanatomy at UW Bs97/TEXT/P13/ Vestibulointro.htm Primary ter- ocular minal nuclei reflex • http://www.lib.mcg.edu/edu/eshuphysio/ program/section8/8ch6/s8ch6_29.htm of the affer• Parkinson.org ent (sensory) This article was originally based on an entry cranial The cranial from a public domain edition of Gray’s Ananerve nuclei nerves tomy. As such, some of the information conschematically schematically tained herein may be outdated. represented;
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