vestibular apparatus

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Related to vestibular apparatus: Semicircular canals, Vestibular nuclei

ves·ti·bu·lar apparatus

the receptor organ of the vestibular portion of the eighth cranial nerve consisting of the three semicircular canals and the otolith, located within the petrous portion of the temporal bone of the cranium.

vestibular apparatus

the inner ear structures that are associated with balance and position sense. They include the vestibule and semicircular canals.
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Vestibular apparatus

vestibular apparatus

The system of semicircular canals, utricle and saccule in the inner ear, lying within the temporal bone, that provides the functions of hearing and balance.

vestibular apparatus

that part of the inner ear which together with the COCHLEA forms the membranous labyrinth (see EAR).

ves·ti·bu·lar ap·pa·ra·tus

(ves-tibyū-lăr ap'ă-ratŭs)
Receptor organ of vestibular portion of eighth cranial nerve consisting of three semicircular canals and the otolith, located within petrous portion of temporal bone of cranium.


1. pertaining to any vestibule.
2. pertaining to the vestibular organ.

vestibular apparatus
includes the vestibular organ and the vestibular branch of the vestibulocochlear nerve.
canine idiopathic vestibular syndrome
seen in aged dogs, characterized by the sudden onset of head tilt, nystagmus, rolling, falling and circling, often with considerable distress. The cause is unknown, but a peripheral vestibular lesion is suspected. Signs usually regress within a few days. Called also geriatric vestibular syndrome, 'stroke'.
feline vestibular syndrome
an acute onset of head tilt, rolling and nystagmus in cats of all ages. There is usually rapid improvement over a few days. The cause is unknown.
geriatric vestibular syndrome
see canine idiopathic vestibular syndrome (above).
vestibular gland
vestibular membrane
one of the membranes subdividing the osseous labyrinth into three compartments.
vestibular organ
consists of a bony labyrinth containing a membranous labyrinth in the inner ear. Part of the membranous labyrinth is the nonacoustic labyrinth or vestibular organ. The vestibular organ consists of the membranous saccule and utricle and semicircular canals. The semicircular canals contain balance end organs called cristae and the saccule and utricle contain similar end organs called maculae. The organ is essential in the maintenance of the animal's balance.
paradoxical vestibular syndrome
vestibular signs of head tilt and ataxia to the side opposite the lesion. Reported in dogs with tumors of the choroid plexus.
vestibular syndrome
see vestibular ataxia, canine idiopathic vestibular syndrome (above), feline vestibular syndrome (above).
vestibular system
see vestibular apparatus (above).
vestibular window
see oval window.
References in periodicals archive ?
Self-motion is detected by several receptors, including the vestibular apparatus, which is located in the inner ear.
Several neurophysiological studies indicate that self-motion signals from the vestibular apparatus are sent to the same brain stem nuclei that are stimulated by visually induced self-motion cues (e.
Patients with disorders of the vestibular apparatus often complain of clumsiness in movement.
The results of the study indicated that the parrots were regenerating the cells in their vestibular apparatus.
The vestibular apparatus encompasses the labyrinth of the inner ear along with the cochlea of the auditory system.
Studies on the morphology of the sensory regions of the vestibular apparatus with 45 figures.