Elastic Cartilage · Histology

What is the function of the Eustachian tube, which is partially composed of elastic cartilage?

  1. To produce cerumen for the external ear canal
  2. To amplify and transmit sound vibrations to the inner ear
  3. To house the hair cells for hearing
  4. To equalize air pressure across the tympanic membrane
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Correct answer: To equalize air pressure across the tympanic membrane

The auditory (Eustachian) tube contains elastic cartilage, which ensures the tube remains flexible enough to open and close. This movement is necessary to maintain equal air pressure on both sides of the tympanic membrane.

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