The incus, one of the three middle ear ossicles, is a small, anvil-shaped bone that transmits sound vibrations from the malleus to the stapes. It is located between the malleus and the stapes and is suspended by the incus ligament. The incus plays a crucial role in sound amplification and the proper functioning of the middle ear. It helps to amplify sound vibrations and transmit them to the inner ear, where they are converted into electrical signals and sent to the brain for interpretation.