The name of the smallest bone in the human body is the stapes. Located in the middle ear, the stapes is one of three tiny bones known as the ossicles, which also include the malleus and incus. The stapes measures about 0.1 inches (2.5 millimeters) and is shaped somewhat like a stirrup, which is where its name derives from (the Latin word for stirrup is "stapeda"). The primary function of the stapes is to transmit sound vibrations from the middle ear to the inner ear, playing a crucial role in the process of hearing. Its small size and precise movement are essential for effective auditory function.