Answer: middle ear cavity, tympanic membrane (eardrum)
Explanation:
The pharyngotympanic tube is the tube that connects the cavity of the middle ear to the nasopharynx. This tube is also called a eustachian tube. This tube aerates the middle ear and clears the mucus from the middle ear passes into the nasopharynx.
The pharyngotympanic tube connects the tympanic membrane with the nasal cavity or nasopharynx. It equalize the air pressure between the middle ear and the throat.
