Although foreign to our ears, one part of the ear, the eustachian tubes, turns out to have quite an important role. The function of the Eustachian tube is apparently useful for equalizing pressure inside and outside the ear, and drying or releasing fluid from the middle ear, that is, the ear behind the eardrum. Despite having an important role, but some people often experience loss of function of the eustachian tubes due to blockages. The function of the eustachian tubes is to connect the middle ear to the back of the throat. When you swallow or vaporize, this channel opens briefly to let air in, which makes the pressure in the middle ear and the pressure outside the ear the same. Impaired Eustachian Canal Functions Everybody has an eustachian channel. This channel is shaped like a tube that connects the space behind the eardrum in the middle ear with the back of the nose. In adults, the eustachian tubes are about 35 millimeters or 1.3 inches long and about 3 millimeters in diame...