Path of sound vibration from the pinna to the inner ear

The sound vibration picked by the pinna passes through the external auditory canal to the external auditory canal to the ear drum (tympanic membrane). The vibration of the ear drum is then picked by the middle ear (consisting of malleus/hammer, incus and stapes) where it the passes to the oval window magnified causing vibration of the round window which passes the vibration to the perilymph and then to  the endolymph.

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