Sound

=//__Sound__//=

__How do we hear?__
//When something makes a noise, it sends vibrations, or sound waves, through the air.// //The human eardrum is a stretched membrane, like the skin of a drum. When the sound waves hit your eardrum, it vibrates and the brain interprets these vibrations as sound.// //Actually, as most things having to do with the human body, it is a little more complicated than that.// //After the vibrations hit your eardrum, a chain reaction is set off. Your eardrum, which is smaller and thinner than the nail on your pinky finger, sends the vibrations to the three smallest bones in your body. First the hammer, then the anvil, and finally, the stirrup. The stirrup passes those vibrations along a coiled tub in the inner ear called the cochlea.//

__**How the ear drum works?**__
//The eardrum is a thin membrane that separates the external ear from the middle ear. Its function is to transmit sound from the air to the ossicles inside the middle ear. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforatio of the eardrum can lead to conductive hearing loss.//