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nmdcat.online July 7, 2026

The auditory ossicle that directly transmits mechanical vibrations to the oval window of the inner ear is the

A. Malleus
B. Incus
C. Stapes
✓
D. Tympanum

📝 Explanation

Sound waves vibrate the tympanic membrane, which moves the malleus, then the incus, and finally the stapes. The footplate of the stapes pushes directly into the oval window, transmitting pressure waves into the cochlear fluid.

📖 Additional Information

  • Malleus
  • Incus
  • Stapes
  • Tympanum

Sound waves vibrate the tympanic membrane, which moves the malleus, then the incus, and finally the stapes. The footplate of the stapes pushes directly into the oval window, transmitting pressure waves into the cochlear fluid.

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