Learning Center: EAR PRESSURE

The Eustachian tube normally allows air pressure in the middle ear to adjust and equalize to pressure in the ear canal. A sense of ear pressure may or may not result from an actual pressure on the tympanic membrane.


EAR ANATOMY RELATED TO PRESSURE

The air pressure in the ear canal is the pressure in the outside atmosphere. The pressure in the middle ear (labeled “tympanic cavity,” below) should equal the pressure in the ear canal or else the tympanic membrane with be pulled in or pushed out, causing stretch and discomfort. Unless the tympanic membrane is perforated, air egress from or inflow to the middle ear (tympanic cavity) is transmitted through the Eustachian tube, which opens at the throat (specifically, the nasopharynx).