Eustachian tube
System
Sensory (Ear)
Eustachian tube
Definition
Organ with organ cavity which connects the cavity of the middle ear to the cavity of the pharynx. Examples: There are only two pharyngotympanic tubes, the right and the left pharyngotympanic tubes.[FMA].
Also known as auditory tube, internal auditory tube, pharyngo-tympanic tube, tuba auditiva, tuba auditoria — per UBERON
The Eustachian tube is a part of the Sensory (Ear).