Scala vestibuli
The scala vestibuli, also known as vestibular duct, is the superior most duct of the cochlea duct. It is filled with perilymph and communicates directly with the subarachnoid space via the perilymphatic duct.
It is separated from the scala media by Reissner's membrane (vestibular membrane) and from the scala tympani by the spiral lamina.
See also
