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2015-11-23T19:26:57+05:30

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The stirrup is the smallest bone in the body, smaller than a grain of rice. It rests against the oval window membrane leading into the inner ear. 

The stirrup moves in and out of the oval window membrane like a piston as the drum moves in response to sound. 

When the stirrup moves in and out it pushes the fluid in the cochlea and the round window allows the fluid to be displaced.
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