Outer ear receives the vibrations and transmits them to the ear canal. The canal carries the vibration that stricke a stretched membrane called the ear drum. From the ear drum the vibration passes to the middle ear. Middle ear has three delicate bones-hammer, anvil and stirrup. These bones pass on the vibrations to the inner ear. Inner ear: It has a coiled tube called the cochlea. Tiny hairs in this liquid filled tube pick up vibrations from the middle ear. They send a signal to the brain through the auditory nerve and we hear the sound.
