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Updated April 11, 2017. The auditory ossicles are a chain of small bones in the middle ear that transmit sound from the outer ear to the inner ear as a mechanical vibration. The names of these three bones are taken from Latin. The malleus is also known as the hammer, the incus is also called the anvil, and the stapes is known as the stirrup..
The outer ear also contains the ear canal and the ear drum (tympanic membrane). The middle ear: is the area behind the ear drum. This part of the ear is made of three movable bones called ossicles. The function of these three bones is to convert the sound wave (by striking the eardrum) into mechanical vibrations.