Eustachian Tube

The eustachian tube, also called pharyngotympanic tube, connects the middle ear with the upper throat and the rear part of the nasal cavity. It is responsible for regulating the pressure within the middle ear. This canal is the reason why you feel like your ears are “full” or blocked when you travel due to changes in air pressure. It is often closed and it only opens when you swallow, chew, and yawn.