membranous labyrinth

labyrinth /lab·y·rinth/ (lab´ĭ-rinth) the internal ear, made up of the vestibule, cochlea, and canals. labyrin´thine

Labyrinth. (A), Anterior view of the bony labyrinth (labyrinthus osseus). (B), Posterior view of the membranous labyrinth (labyrinthus membranaceus), which is contained within the bony labyrinth.

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bony labyrinth  the bony part of the internal ear.

Labyrinth. (A), Anterior view of the bony labyrinth (labyrinthus osseus). (B), Posterior view of the membranous labyrinth (labyrinthus membranaceus), which is contained within the bony labyrinth.

cochlear labyrinth  the part of the membranous labyrinth that includes the perilymphatic space and the cochlear duct.

endolymphatic labyrinth  membranous l.

ethmoidal labyrinth  either of the paired lateral masses of the ethmoid bone, which contain many thin-walled cellular cavities.

membranous labyrinth  a system of communicating epithelial sacs and ducts within the bony labyrinth, containing the endolymph.

Labyrinth. (A), Anterior view of the bony labyrinth (labyrinthus osseus). (B), Posterior view of the membranous labyrinth (labyrinthus membranaceus), which is contained within the bony labyrinth.

osseous labyrinth  bony l.

perilymphatic labyrinth  perilymphatic space.

vestibular labyrinth  the part of the membranous labyrinth that includes the utricle and saccule and the semicircular ducts.

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membranous labyrinth

n.

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

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membranous labyrinth

Etymology: L, membrana + labyrinthos, a maze

a network of three fluid-filled membranous semicircular ducts suspended within the bony semicircular canals of the inner ear, associated with the sense of balance. The ducts, which contain endolymph, follow the contours of the bony canals and are about one fourth of the diameter of the canals.

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labyrinth

the system of interconnecting cavities or canals of the internal ear, consisting of the vestibule, cochlea and semicircular canals.

The cochlea is concerned with hearing, and the vestibule and semicircular canals with equilibrium (sense of balance).

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bony labyrinth

the bony or osseous labyrinth is composed of a series of canals tunneled out of the temporal bone.

ethmoid labyrinth, ethmoidal labyrinth

either of the paired lateral masses of the ethmoid bone, consisting of numerous thin-walled cellular cavities, the ethmoidal cells.

membranous labyrinth

inside the osseous labyrinth is the membranous labyrinth, which conforms to the general shape of the osseous labyrinth but is smaller. A fluid called perilymph fills the space between the osseous and membranous labyrinths. Fluid inside the membranous labyrinth is called endolymph. These fluids play an important role in the transmission of sound waves and the maintenance of body balance.

osseous labyrinth

a complex excavation in the petrous part of the temporal bone which houses the membranous labyrinth.