Q1 of 102 Page 130

Name the following:

The part which equalizes the air pressure in the middle and external ear.

Eustachian tube


Explanation: The two functions of the Eustachian tube is to ventilate the middle ear space, ensuring that its pressure remains at near normal environmental air pressure and the secondary function of the Eustachian tube is to drain any accumulated secretions, infection, or debris from the middle ear space.


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