The anatomy of the middle ear and cochlea are shown using models and diagrams explaining the process of air-fluid transmission and finally transduction by hair cells. Gross specimens demonstrate the cochlear nerve and its brain stem relays and crossings all the way to auditory cortex. Wernicke's area and language comprehension and lateralization are briefly discussed. The Weber and Rinne tests are demonstrated along with radiographs showing normal anatomy and a tumor in the cerebellopontine angle.