| vestibulo- | Vestibule, vestibulum. Origin: L. Vestibulum (05 Mar 2000) |
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| vestibulo-equilibratory control | Nerve impulses transmitted from the saemicircular canals, saccule, and utricle that serve to maintain the equilibrium of the body. (05 Mar 2000) |
| vestibulocerebellar ataxia | Ataxia due to disease of the central vestibular system or its cerebellar components, manifested clinically by an unsteady gait, nystagmus, and incoordination of arm and leg movements. (05 Mar 2000) |
| vestibulocerebellum | Those regions of the cerebellar cortex whose predominant afferent fibres arise from the ganglion vestibulare and the vestibular nuclei; structures included under this term are nodulus, flocculus, ventral parts of the uvula and small ventral parts of the lingula. Synonym: archeocerebellum. Origin: vestibulo-+ L. Cerebellum (05 Mar 2000) |
| vestibulocochlear | 1. Relating to the vestibulum and cochlea of the ear. Synonym: statoacoustic. (05 Mar 2000) |
| vestibulocochlear nerve | <anatomy, nerve> The vestibulocochlear nerve is responsible for the sense of hearing and balance (body position sense). Lesions of the eighth nerve can result in deafness, tinnitus, dizziness, vertigo and vomiting. Synonym: cranial nerve VIII. (27 Sep 1997) |
| vestibulocochlear nuclei | The combined cochlear and vestibular nuclei in the brainstem that receive the incoming fibres of the eighth cranial nerve. See: vestibular nucleus. Synonym: nuclei nervi vestibulocochlearis. (05 Mar 2000) |
| vestibulocochlear organ | The external, middle, and internal ear. Synonym: organum vestibulocochleare. (05 Mar 2000) |
| vestibuloneuronitis | <neurology> Inflammation of the inner ear and semicircular canals. These structures are normally responsible for the maintenance balance and the perception of body position. Inflammation of these structures can result in nausea, vomiting and vertigo made worse by movement. (18 Nov 1997) |
| vestibulopathy | Any abnormality of the vestibular apparatus, e.g., Meniere's disease. (05 Mar 2000) |
| vestibuloplasty | Those procedures designed to widen the zone of attached gingiva and deepen the vestibular depth which will facilitate the clearance of the area for natural food passage, and provide access for toothbrushing and interdental stimulation. (12 Dec 1998) |
| vestibulospinal | See: vestibulospinal tract. (05 Mar 2000) |
| vestibulospinal reflex | The influence of vestibular stimulation on body posture. (05 Mar 2000) |
| vestibulospinal tract | A somatopically organised fibre bundle originating from the lateral vestibular nucleus (nucleus of Deiters) which descends uncrossed into the anterior funiculus of the spinal cord lateral to the anterior median fissure; the tractus extends throughout the length of the cord, distributing fibres at all levels to the medial part of the anterior horn. Excitatory impulses conveyed by the vestibulospinal tract increase extensor muscle tone. Synonym: tractus vestibulospinalis, deiterospinal tract. (05 Mar 2000) |
| vestibulotomy | Operation for an opening into the vestibule of the labyrinth. Origin: vestibulo-+ G. Tome, incision (05 Mar 2000) |
| reflex, vestibulo-ocular | A reflex wherein impulses are conveyed from the cupulas of the saemicircular canals and from the otolithic membrane of the saccule and utricle via the vestibular nuclei of the brainstem and the median longitudinal fasciculus to the oculomotor nerve nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory eye movements. (12 Dec 1998) |
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