Sound waves enter the scala vestibuli, pass through the scala media at some point in their course to the scala tympani and round window, oscillating the basilar membrane QuickTime and leede m tensor tympan m stapedius Vestibule Oval window Scala media of malleus ess of incus Helicotrema membranc ,· Cochlear partition stapedial joint 2.crus stapes Scala tympani footplate Round window Eustachian tubeSound waves enter the scala vestibuli, pass through the scala media at some point in their course to the scala tympani and round window, oscillating the basilar membrane. QuickTime™ and a Animation decompressor are needed to see this picture