Chapter 19: Diseases of the Eyes, Ears, Nose, and Throat

The middle ear is an air-filled cavity in temporal bone containing ossicles that transmit sound to the inner ear. The tympanic membrane separates the external ear from the middle ear and is translucent pearly gray, permitting visualization of the middle ear. Middle ear pressure is equalized with atmospheric pressure by way of the eustachian tube. ................
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