The nurse is reviewing the structures of the ear.Which of these statements concerning the eustachian tube is true?
A) The eustachian tube is responsible for the production of cerumen.
B) It remains open except when swallowing or yawning.
C) The eustachian tube allows passage of air between the middle and outer ear.
D) It helps equalize air pressure on both sides of the tympanic membrane.
Correct Answer:
Verified
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