Vestibular aqueduct

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Vestibular aqueduct
Gray921.png
Interior of right osseous labyrinth.
Gray923.png
The cochlea and vestibule, viewed from above. (Aqueductus vestibuli labeled at bottom right.)
Latin Aquaeductus vestibuli
Gray's p.1048
MeSH Vestibular+Aqueduct

At the hinder part of the medial wall of the vestibule is the orifice of the vestibular aqueduct, which extends to the posterior surface of the petrous portion of the temporal bone.[1]

It transmits a small vein, and contains a tubular prolongation of the membranous labyrinth, the ductus endolymphaticus, which ends in a cul-de-sac between the layers of the dura mater within the cranial cavity.

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