Medial vestibular nucleus

Medial vestibular nucleus
A cross section of the lower pons showing the medial vestibular nucleus (#3) labeled at the top left.
Medial vestibular nucleus is not labeled, but region is visible near #10
Details
Identifiers
Latin	nucleus vestibularis medialis
NeuroNames	hier-714
NeuroLex ID	Medial vestibular nucleus
TA	A14.1.04.245 A14.1.05.426
FMA	54611
*Anatomical terms of neuroanatomy* [edit on Wikidata]

The medial vestibular nucleus is one of the vestibular nuclei. It is located in the medulla oblongata.

Lateral vestibulo-spinal tract (lateral vestibular nucleus “Deiters”)- via ventrolateral medulla and spinal cord to ventral funiculus (lumbo-sacral segments). ..Ipsilaterally for posture

Medial vestibulo-spinal tract (medial, lateral, inferior, vestibular nuclei), bilateral projection via descending medial longitudinal fasciculus to cervical segments. DESCENDING MLF..Bilaterally for head/neck/eye movements

It is one of the nuclei that corresponds to CN VIII, corresponding to the vestibular nerve, which joins with the occular nerve.

It receives its blood supply from the Posterior Inferior Cerebellar Artery, which is compromised in the lateral medullary syndrome.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

http://www.neuroanatomy.wisc.edu/virtualbrain/BrainStem/13VNAN.html

Anatomy of the medulla

Grey matter

Cranial nuclei

afferent:	Solitary nucleus tract Dorsal respiratory group Gustatory nucleus Vestibular nuclei Lateral Medial Inferior

efferent:	Hypoglossal nucleus Nucleus ambiguus Dorsal nucleus of vagus nerve Inferior salivatory nucleus

Dorsal

Ventral

White matter

Dorsal	Sensory Sensory decussation Medial lemniscus Juxtarestiform body Ascending dorsal longitudinal fasciculus Medial longitudinal fasciculus Motor Descending dorsal longitudinal fasciculus Medial longitudinal fasciculus

Ventral	Descending tracts Olivocerebellar tract Rubro-olivary tract

Surface

Front	Pyramid decussation Anterior median fissure Anterolateral sulcus Olive Inferior olivary nucleus

Back	Posterior median sulcus Posterolateral sulcus Area postrema Vagal trigone Hypoglossal trigone Medial eminence Inferior cerebellar peduncle

Grey

Physiology of balance and hearing

Hearing

General	Auditory system Bone conduction Otoacoustic emission Tullio phenomenon

Pathway	inner ear: Hair cells → Spiral ganglion → Cochlear nerve ^VIII → pons: Cochlear nucleus (Anterior, Dorsal) → Trapezoid body → Superior olivary nuclei → midbrain: Lateral lemniscus → Inferior colliculi → thalamus: Medial geniculate nuclei → cerebrum: Acoustic radiation → Primary auditory cortex

Balance

General	Vestibular system

Pathway	inner ear: Vestibular nerve ^VIII → pons: Vestibular nuclei (Medial vestibular nucleus, Lateral vestibular nucleus) cerebellum: Flocculonodular lobe spinal cord: Vestibulospinal tract (Medial vestibulospinal tract, Lateral vestibulospinal tract) thalamus: Ventral posterolateral nucleus cerebrum: Vestibular cortex Vestibulo-oculomotor fibers

This article is issued from Wikipedia - version of the 5/18/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.

Medial vestibular nucleus

See also

References

External links