Where Is the Smallest Bone in the Body Located?

The stapes bone is also known as the "stirrup bone" because it is shaped like a stirrup. This is a movable bone that is connected to the malleus bone and the incus bone. All three of these small bones vibrate whenever sound waves enter the ear. They transmit their vibrations to the inner ear where the auditory nerve picks up the vibrations and travels to the brain. This allows all mammals, including humans, to hear.