The middle ear is connected with the throat by the Eustachian tube.
Amongst his discoveries were the Eustachian tube and the eustachian valve of the heart.
Eustachian tube—A tube leading from the side of the throat to the internal ear.
eustachian tube n.
A slender tube that connects the tympanic cavity with the nasal part of the pharynx and serves to equalize air pressure on either side of the eardrum. Also called auditory tube, salpinx.