Cochlear duct

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Cochlear duct

Diagrammatic longitudinal section of the cochlea. (visible at far right under latin name ductus cochlearis)
Latin	ductus cochlearis
Gray's	subject #232 1054
MeSH	Cochlear+Duct

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The cochlear duct (or scala media) is an endolymph filled cavity inside the cochlea, located in between the scala tympani and the scala vestibuli, separated by the basilar membrane and Reissner's membrane (the vestibular membrane) respectively.

Scala media houses the organ of Corti.

[edit] Additional images

Transverse section of the cochlear duct of a fetal cat.

The membranous labyrinth.

Floor of ductus cochlearis.

Cross section of the cochlea.

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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 Endolymph • Stria vascularis • Spiral ligament Organ of Corti: Stereocilia • Tectorial membrane • Sulcus spiralis (externus, internus) • Spiral limbus

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The content of this section is licensed under the GNU Free Documentation License (local copy). It uses material from the Wikipedia article "Scala media" modified November 23, 2009 with previous authors listed in its history.