Cochlear duct

Cochlear duct
Inner ear, with cochlear duct labeled near bottom.
Diagrammatic longitudinal section of the cochlea. (visible at far right under latin name ductus cochlearis)
Details
Identifiers
Latin	ductus cochlearis
MeSH	A09.246.631.246.292
TA	A15.3.03.093
FMA	61119
*Anatomical terminology*

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

The cochlear duct houses the organ of Corti.

Additional images

Anatomy of hearing and balance

Tympanic cavity	Medial structures oval window round window secondary tympanic membrane prominence of facial canal promontory of tympanic cavity Posterior structures mastoid cells aditus to mastoid antrum pyramidal eminence
Ossicles	Malleus superior ligament lateral ligament anterior ligament Incus superior ligament posterior ligament Stapes annular ligament Muscles stapedius tensor tympani
Auditory tube / Eustachian tube	Torus tubarius

Auditory system/
Cochlear labyrinth

General cochlea	Vestibular duct Helicotrema Tympanic duct 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 tip links Tectorial membrane Sulcus spiralis externus internus Spiral limbus
Cells	Claudius cell Boettcher cell

Vestibular system/
Vestibular labyrinth

Vestibule	Utricle macula Saccule macula Kinocilium Otolith Vestibular aqueduct endolymphatic duct endolymphatic sac Ductus reuniens
Semicircular canals	Superior semicircular canal Posterior semicircular canal Horizontal semicircular canal Ampullary cupula Ampullae crista ampullaris

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