detailed anatomy of human ear outer, middle, inner structures with auditory system. highlighted canal, vestibule, frequency

anatomy ear human outer middle inner structure auditory system canal earring vestibule frequency infection highlight pathway balance eardrum window resonance labyrinth external membrane meatus oval worked acoustic detail process cochlea auricle helix lobe antihelix tragus antitragus concha incus malleus stapes ossicles tympanic tensor tympani stapedius cochlear nerve brain neurology audiology healthcare