membranous labyrinth


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Related to membranous labyrinth: osseous labyrinth, bony labyrinth

mem·bra·nous lab·y·rinth

[TA]
a complex arrangement of communicating membranous canaliculi and sacs, filled with endolymph and surrounded by perilymph, suspended within the cavity of the bony labyrinth; its chief divisions are the cochlear duct and the vestibular labyrinth.
Synonym(s): labyrinthus membranaceus [TA]

membranous labyrinth

n.
The fluid-filled membranous sacs of the inner ear that are associated with the senses of hearing and balance.

membranous labyrinth

A system of communicating ducts and sacs filled with endolymph cushioned by perilymph in the bony labyrinth of the inner ear.

Components membranous labyrinth:
• Cochlea, which houses the sensory part of the auditory system;
• Semicircular canals, which is sensitive to rotatory movement; and
• Vestibule, which contains the sacculus and utriculus (sensitive to linear movement).

mem·bra·nous lab·y·rinth

(mem'bră-nŭs lab'i-rinth) [TA]
A complex arrangement of communicating membranous canaliculi and sacs, filled with endolymph and surrounded by perilymph, suspended within the cavity of the bony labyrinth; its chief divisions are the cochlear labyrinth and the vestibular labyrinth.

membranous labyrinth

see EAR.

mem·bra·nous lab·y·rinth

(mem'bră-nŭs lab'i-rinth) [TA]
Complex arrangement of communicating membranous canaliculi and sacs, filled with endolymph and surrounded by perilymph, suspended within cavity of the bony labyrinth.
References in periodicals archive ?
A labyrinthectomy, the removal of the membranous labyrinth, is an irreversible procedure that is often successful in eliminating the dizziness associated with Meniere's disease.
Maintenance of overall system equilibrium across the membranous labyrinth requires that the RC products of both the perilymphatic (p) and endolymphatic (e) systems be equal--that is: [R.sub.p] [C.sub.p] = [R.sub.e] [C.sub.e].
After the membranous labyrinth is removed, Gelfoam saturated with streptomycin or gentamicin is placed in the inner and middle ears, and the endaural tympanomeatal flap is replaced and closed.
Brain MRI has often demonstrated segmental enhancement of the VIIth and VIIIth cranial nerves, geniculate ganglion, and membranous labyrinth, (3) but petrosal inflammation has only been reported once in Ramsay Hunt syndrome.
Magnetic resonance imaging (MRI) of the right ear demonstrated a complete obliteration of the membranous labyrinth (figure 2).
From a more global perspective, the utility of pharmacologic manipulation of the membranous labyrinth might play a considerable role in the treatment of a variety of otologic disorders.

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