Our Ears detect Sound

How do the ears detect sound?
We hear a number of sounds every day. Some are pleasant while others are not. On the basis of its structure the human ear can be divided into there parts external, middle and internal. Anything producing sound first vibrates. These vibrations set up a motion of sound waves in the medium through which the sound reaches our ear. The external ear has large surface and can receive a number of sound waves at the same time.
The internal structure of human ear
            When the sound waves hit the external ear, they are transmitted to the middle ear through a pipe. The middle part has the ear drum, which starts vibrating when tenses sound waves hit it. Just behind the ear drum there are three small bones called hummer anvil and stirrup. As the ear drum vibrates, these bones also start vibrating. These vibrating are then transmitted to the cochlea. Which acts like a spring it is surrounded by a fluid the fluid contains the nerve ending.

Due to the vibrations of cochlea the fluid also starts vibrating and this activates the nerve endings. The activation of the nerve ending produce impulse which are taken to the brain the auditory nerve and we hear the sound.

            Our ears can detect both feeble and intense sounds with frequencies ranging from 20 Hz to 20,000 Hz. In the order to keep the ear healthy, it is essential to produced in the ear, which gets deposited on the ear drum if it is not cleaned. If this wax accumulates then it can lead of our ears and consult the ENT expert as soon as there is trouble in the ears.

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