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Structures of the feline ear. 1 = pinna; 2 = external ear canal, consisting of a vertical canal and a horizontal canal; 3 = tympanic membrane; 4 = bulla/middle ear space; 5 = auditory tube; 6 = middle ear ossicles (malleus, incus and stapes); 7 = cochlea; 8 = vestibular structures; 9 = cranial nerve VIII. Reproduced from Ryugo and Menotti-Raymond, 1 with permission
