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The vestibular duct or scala vestibuli is a
perilymph Perilymph is an extracellular fluid located within the inner ear. It is found within the scala tympani and scala vestibuli of the cochlea. The ionic composition of perilymph is comparable to that of plasma and cerebrospinal fluid. The major ...
-filled cavity inside the
cochlea The cochlea is the part of the inner ear involved in hearing. It is a spiral-shaped cavity in the bony labyrinth, in humans making 2.75 turns around its axis, the modiolus. A core component of the cochlea is the Organ of Corti, the sensory o ...
of the
inner ear The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound detection and balance. In mammals, it consists of the bony labyrinth, a hollow cavity in th ...
that conducts sound vibrations to the
cochlear duct The cochlear duct (bounded by the scala media) is an endolymph filled cavity inside the cochlea, located between the tympanic duct and the vestibular duct, separated by the basilar membrane and the vestibular membrane (Reissner's membrane) resp ...
. It is separated from the cochlear duct by
Reissner's membrane The vestibular membrane, vestibular wall or Reissner's membrane, is a membrane inside the cochlea of the inner ear. It separates the cochlear duct from the vestibular duct. It helps to transmit vibrations from fluid in the vestibular duct to th ...
and extends from the
vestibule of the ear The vestibule is the central part of the bony labyrinth in the inner ear, and is situated medial to the eardrum, behind the cochlea, and in front of the three semicircular canals. The name comes from the Latin ', literally an entrance hall. Stru ...
to the
helicotrema The helicotrema (from el, ἕλιξ elixmeaning coil and rēmameaning hole) is the part of the cochlear labyrinth where the scala tympani and the scala vestibuli meet. It is the main component of the cochlear apex. The hair cells near this ...
where it joins the tympanic duct.


Additional images

Image:Gray923.png, The
cochlea The cochlea is the part of the inner ear involved in hearing. It is a spiral-shaped cavity in the bony labyrinth, in humans making 2.75 turns around its axis, the modiolus. A core component of the cochlea is the Organ of Corti, the sensory o ...
and vestibule, viewed from above. Image:Gray903.png, Transverse section of the cochlear duct of a fetal cat. Image:Gray921.png, Interior of right osseous labyrinth. Image:Gray928.png, Diagrammatic longitudinal section of the cochlea.


See also

* Tympanic duct


References


internal websites


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University of Kansas The University of Kansas (KU) is a public research university with its main campus in Lawrence, Kansas, United States, and several satellite campuses, research and educational centers, medical centers, and classes across the state of Kansas. T ...

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Indiana University – Purdue University Indianapolis Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th st ...

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University of New England (United States) The University of New England (UNE) is a private research university in Maine with campuses in Portland and Biddeford, as well as a study abroad campus in Tangier, Morocco. During the 2020 academic year, 7,208 students were enrolled in UNE's ca ...
Auditory system Ear {{anatomy-stub