 | Ruptured eardrum The eardrum is a thin, transparent layer of cells inside the
ear canal. It separates the outer ear from the delicate
structures of the middle and inner ear. Besides protecting
the inner and middle ear from cold, wind, earwax, and
anything else that might find its way into your ear, the
eardrum helps you hear. It is called the eardrum not just
because it looks like a drumhead, but also because it
functions like one. The eardrum receives vibrating sound
waves and transmits them to the tiny bones in your ear.
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