General Knowledge · 2
What is the smallest bone in the entire world that weighs less than a grain of rice?
Answer
Stapes
The stapes, located in the middle ear, is not only the smallest human bone but also one of the smallest bones of any animal, weighing only about 2.8 milligrams. This tiny bone transmits vibrations from the eardrum to the inner ear, playing a crucial role in hearing. The three ossicles (stapes, incus, malleus) are among the smallest bones found in any vertebrate.
💡 Did you know?
The stapes is so small (about 3mm) that a few dozen could fit on a standard postage stamp; yet it's essential for hearing and transmits sound waves efficiently.
Other options people guess
- Incus
- Malleus
- Coccyx
Topics
- anatomy
- biology
- records
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