Bony labyrinth

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Bony labyrinth

Lateral view of right osseous labyrinth

Interior view of right osseous labyrinth
Latin	Labyrinthus osseus
Gray's	subject #232 1047

The bony labyrinth (osseous labyrinth) is the rigid outer wall of the inner ear. It consists of three parts: the vestibule, semicircular canals, and cochlea. These are cavities hollowed out of the substance of the bone, and lined by periosteum. They contain a clear fluid, the perilymph, in which the membranous labyrinth is situated.

References

This article incorporates text from a public domain edition of Gray's Anatomy.

Tympanic cavity	Labyrinthine wall/medial: Oval window Round window Secondary tympanic membrane Prominence of facial canal Promontory of tympanic cavity Membranous wall/lateral Mastoid wall/posterior: Mastoid cells Aditus to mastoid antrum Pyramidal eminence Carotid wall/anterior Tegmental wall/roof: Epitympanic recess Jugular wall/floor

Ossicles	Malleus (Neck of malleus, Superior ligament of malleus, Lateral ligament of malleus, Anterior ligament of malleus) Incus (Superior ligament of incus, Posterior ligament of incus) Stapes (Anular ligament of stapes)

Muscles	Stapedius Tensor tympani

Eustachian tube	Bony part of pharyngotympanic tube Cartilage of pharyngotympanic tube (Torus tubarius)

General cochlea	Scala vestibuli Helicotrema Scala tympani Modiolus Cochlear cupula

Perilymphatic space	Perilymph Cochlear aqueduct

Cochlear duct / scala media	Reissner's/vestibular membrane Basilar membrane Reticular membrane Endolymph Stria vascularis Spiral ligament Organ of Corti: Stereocilia Tectorial membrane Sulcus spiralis (externus, internus) Spiral limbus

Cells	Claudius cell Boettcher cell

anat (e/p)/phys/devp

noco/cong, epon

proc, drug (S2)

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