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Biology

Ossicles: The Smallest Bones in the Human Body

Quick fact

The stapes—the innermost of the three ossicles—is the smallest bone in the human body, measuring about 3 millimeters, roughly the size of a grain of rice.

Why this is interesting

You've likely heard that the bones in your middle ear are the smallest in your body—but did you know they act as a lever system that can amplify sound pressure twentyfold?