Cochlear duct

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

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.

Additional images

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  Transverse section of the cochlear duct of a fetal cat.

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  The membranous labyrinth.

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  Floor of ductus cochlearis.

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  Cross section of the cochlea.

External links

• Cross section at avatar.com.au

v t e Sensory system: Auditory and Vestibular systems (TA A15.3, TH 3.11.09, GA 10.1029) Outer ear Pinna (Helix, Antihelix, Tragus, Antitragus, Incisura anterior auris, Earlobe) Ear canal Auricular muscles Eardrum (Umbo Pars flaccida) Middle ear 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) Inner ear/ (membranous labyrinth, bony labyrinth) Auditory system Cochlear labyrinth 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 Vestibular system/ Vestibular labyrinth Static/translations/vestibule/endolymphatic duct: Utricle (Macula) Saccule (Macula, Endolymphatic sac) Kinocilium Otolith Vestibular aqueduct Canalis reuniens Kinetic/rotations: Semicircular canals (Superior, Posterior, Horizontal) Ampullary cupula Ampullae (Crista ampullaris) M: EAR anat (e/p)/phys/devp noco/cong, epon proc, drug (S2)