Vestibulospinal tract

Vestibulospinal tract

Infobox Anatomy
Name = PAGENAME
Latin = tractus vestibulospinalis
GraySubject = 185
GrayPage = 760


Caption = Vestibulospinal tract is 2c, in red at bottom center.


Caption2 = Diagram of the principal fasciculi of the spinal cord. (Vestibulospinal fasciculus labeled at bottom right.)
System =
Precursor =
MeshName =
MeshNumber =
DorlandsPre = t_15
DorlandsSuf = 12817329
The vestibulospinal tract is one of the descending spinal tracts of the ventromedial pathway. It originates from the vestibular nuclei of the medulla, which conducts information from the vestibular labyrinth in the inner ear.

Motion of fluid in the vestibular labyrinth activates hair cells that signal the vestibular nuclei via cranial nerve VIII.

Parts

The medial part of the vestibulospinal tract project bilaterally down the spinal cord and triggers the cervical spinal circuits, controlling a correct position of the head and neck.

The lateral part of the vestibulospinal tract projects ipsilateral down to the lumbar region. There it helps to maintain an upright and balanced posture by stimulating extensor motor neurons in the legs.

External links

* [http://faculty.etsu.edu/currie/images/neuro2.jpgDiagram] at etsu.edu
* [http://vestibular.wustl.edu/vestibular6.html Overview] at wustl.edu
*


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • vestibulospinal tract — n a nerve tract on each side of the central nervous system containing nerve fibers that arise from cell bodies in the lateral vestibular nucleus on one side of the medulla oblongata and that descend on the same side in the lateral and anterior… …   Medical dictionary

  • Medial vestibulospinal tract — Brain: Medial vestibulospinal tract Vestibulospinal tract is 2c, in red at bottom center …   Wikipedia

  • vestibulospinal tract lateral — tractus vestibulospinalis lateralis …   Medical dictionary

  • vestibulospinal tract medial — tractus vestibulospinalis medialis …   Medical dictionary

  • tract — An elongated area, e.g., path, track, way. SEE ALSO: fascicle. SYN: tractus. [L. tractus, a drawing out] alimentary t. SYN: digestive t.. anterior corticospinal t. uncrossed fibers forming a small bundle in the anterior funiculus of the …   Medical dictionary

  • vestibulospinal — See lateral v. tract. * * * ves·tib·u·lo·spi·nal ve .stib yə lō spī nəl adj of, relating to, or being the vestibulospinal tracts …   Medical dictionary

  • vestibulospinal — ve|stibyələ+ adjective Etymology: vestibule + o + spinal : of, relating to, or being a nerve tract passing from the nuclei of the vestibular nerve in the medulla down the spinal cord …   Useful english dictionary

  • Corticospinal tract — Pyramidal tract redirects here. This page refers to the nerve fibres underlying the pyramids. For the actual area of the brain, Pyramids, see Pyramid of medulla oblongata. Brain: Corticospinal tract Deep dissection of brain stem. Lateral view. (… …   Wikipedia

  • Corticobulbar tract — Brain: Corticobulbar tract Components and location of the corticobulbar tract. Latin tractus corticonuclearis NeuroNames …   Wikipedia

  • Dorsal trigeminal tract — Brain: Dorsal trigeminal tract NeuroNames hier 602 NeuroLex ID birnlex 1718 The dorsal trigeminal tract (dorsal trigeminothalamic tract, or lemniscus) is a tract which receives signals from …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”