Q5.    Write short notes on the following:

        (f) Ear ossicles

    

Answers (1)
  • Three small bones called ear ossicles are present in the tympanic cavity of the middle ear.
  • They are malleus, incus and stapes.
  • Handle of the malleus is attached to the central part of the tympanic membrane which is called umbo.
  • Other end of the malleus is attached to the incus by ligaments.
  • The incus on its other end is attached to the stapes by ligaments.
  • Other end of the stapes covers an opening called fenestra ovalis or oval window of cochlea.
  • Ear ossicles transfer vibration from the external ear to the inner ear.

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