The human ear. Lars Chittka; Axel Brockmann, CC BY 2.5. A diagram of the three main zones containing the inner workings of the human ear will no doubt be familiar to any Hackaday reader who has ...

The eardrum then starts vibrating and these vibrations are passed to three small ear bones – called the hammer, anvil and stirrup. Many animals have ears that are able to detect ultrasound.