know your body.-EARS

Any sound playing a drum ,song , music is a vibration which travel along the air waves .These sound vibration reach an cardrum.The cardrum is attached to a bone -called hammer .This hammer passes the sound onto two more bones called anvil and stirrup.These two bones transmit the sound vibration to inner ear where these sounds are converted into electrical signals that our brain can interpret.We can differentiate between high and low volume and pitch.Our ears not only allows us to hear but they also help us to keep our balance.We can also detect the direction of the sound.The one of the outer part of the ear is called Penna.is used to find out the direction of the sound.The smallest bone is the stirrup it is hardly larger than grain of rice.The ears and nose do not have bones.Their inner support is cartilage or gristle which is flexible than bone.
HUMAN EAR

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