Explain human ear with diagram briefly

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Explain human ear with diagram briefly

Posted by Kajal Pahwa 6 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 6 years, 9 months ago

The outer ear is called pinna. It collects the sound from the surroundings. The collected sound passes through the auditory canal, there is a thin membrane called eardrum. When a compression of the medium reaches the eardrum, the pressure on the outside of the membrane increases and forces the eardrum inward. Similarly, the eardrum moves outward where a rarefaction reaches it. In this way eardrum vibrates.
The vidrations are amplified several times by three bones in middle ear. The middle ear transmits the amplified pressure variations receievd from the sound wave to the inner ear, the pressure variations are turned into electrical signals by the cochlea.
These electrical signals are sent to the brain via the auditory nerve and the brain interprets them as sound.

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