A nurse is educating a client about the function of the parts of the auditory system. Which is the function of the Eustachian tube?
A) Transmits vibration to the fluid-filled inner ear at the oval window
B) Separates the external from the middle ear
C) Sends sensory information to the cerebellum and midbrain
D) Equalizes the pressure in the middle ear with atmospheric pressure
D
Feedback:
The Eustachian tube opens during swallowing or yawning. Its function is to equalize the pressure in the middle ear with atmospheric pressure so that there is equal pressure on both sides of the tympanic membrane to allow the drum to vibrate freely. The stapes transmits the vibration to the fluid-filled inner ear at the oval window. The vestibule sends information to the cerebellum and the midbrain. The tympanic membrane separates the external from the middle ear.
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