500
These are the three parts of the ear that are the tiniest bones in your body. Name them in order that they are defined:
ONE - It is a tiny bone, located next to the eardrum. Since it lies adjacent to the eardrum, the vibrations from the eardrum cause the hammer to vibrate.
TWO - It is another tiny bone next to (above); it vibrates in response to the vibration of (Above)
THREE - Similar to two above, this is a tiny bone in the middle ear. Eventually, it also vibrates and passes the compressional waves to the inner ear.
Remember it HAS to help you hear!
What is Hammer (malleus), Anvil (Incus), and Stirrup (Stapes).