The ear is a sensible and advanced organ of the human body. The role of the ear is to transmit the sound to the brain through its different parts: the outer ear, the middle ear and the inner ear. Its main task is detecting, transmitting and converting the sound into electrical impulses. Another important task is maintaining our sense of balance.
The best way to describe the way the ear works is by showing the route of the sound waves during its trajectory through this organ.
The sound waves travel from the outer ear through the ear canal, making the eardrum vibrate. This makes the bones, known as hammer, anvil and stirrup of the middle ear move. These vibrations pass through an oval window to the fluid-filled cochlea in the inner ear, stimulating thousands of tiny hair cells. As a result these vibrations are transformed in electrical impulses that are perceived by the brain as sound.