How is the structure of the outer and middle ear related to the functions they perform?

The outer ear consists of the auricle and the external auditory meatus. The outer ear picks up sound vibrations and directs them to the eardrum. The middle ear is represented by three auditory ossicles (malleus, anvil and stapes). The system of auditory ossicles, working as levers, increases the pressure of the sound wave by about 50 times.

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