Question

Function of eustachian tube is to

• A. Provide air to the ear ossicles
• B. Remove dirt from the middle ear
• C. Keep middle ear in proper shape
• D. Maintain proper air pressure in the middle ear and internal ear for protecting them from damage by the loud sound

Answer 1

The correct option is D Maintain proper air pressure in the middle ear and internal ear for protecting them from damage by the loud sound

The eustachian tube connects the middle ear cavity with the region of the nasopharynx. The opening and the closing of the tube plays an important role. The opening of the tube equalizes the atmospheric pressure in the middle ear. When the eustachian tube closes, the middle ear is protected from unwanted fluctuations and very high frequency of sound. So, the correct answer is option D.