What is the structure leading from the middle ear to the pharynx?

The structure leading from the middle ear to the pharynx is the Eustachian tube, also known as the auditory tube. It helps equalize air pressure in the middle ear with the atmospheric pressure outside, which is essential for proper hearing. The Eustachian tube connects the tympanic cavity of the middle ear to the nasopharynx, the upper part of the throat behind the nose.