Multiple choice Which canal connects the tympanic cavity to the pharynx? Tympanic canal Vestibular canal Eustachian canal Auditory canal Reveal answer Fill a bubble to check yourself C Correct answer Explanation Eustachian canal is a narrow canal connecting the tympanic cavity to the pharynx. It maintains the air pressure in the tympanic cavity. Its opening into the pharynx is guarded by a valve.