<P> The Eustachian tube , also known as the auditory tube or pharyngotympanic tube , is a tube that links the nasopharynx to the middle ear . It is a part of the middle ear . In adult humans the Eustachian tube is approximately 35 mm ( 1.4 in ) long and 3 mm ( 0.12 in ) in diameter . It is named after the sixteenth - century anatomist Bartolomeo Eustachi . </P>
<P> The Eustachian tube , also known as the auditory tube or pharyngotympanic tube , is a tube that links the nasopharynx to the middle ear . It is a part of the middle ear . In adult humans the Eustachian tube is approximately 35 mm ( 1.4 in ) long and 3 mm ( 0.12 in ) in diameter . It is named after the sixteenth - century anatomist Bartolomeo Eustachi . </P>
channel between the middle ear and the nasopharynx auditory tube
channel between the middle ear and the nasopharynx auditory tube
The Eustachian tube , also known as the auditory tube or pharyngotympanic tube
The Eustachian tube , also known as the auditory tube or pharyngotympanic tube