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Interior of right osseous labyrinth.
The cochlea and vestibule, viewed from above. (Aqueductus vestibuli labeled at bottom right.)
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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