Perilymph-filled cavity within the cochlea which conducts sound vibrations to the scala media, and is separated from it by Reissner's membrane, extending from the oval window to the helicotrema where it joins the scala tympani.
Perilymph-filled cavity within the cochlea which conducts sound vibrations to the scala media, and is separated from it by Reissner's membrane, extending from the oval window to the helicotrema where it joins the scala tympani.