Question

Explain the working of human ear ?

Class 9 - cbse

Answer 1

the human ear consists of the outer ear the middle ear and the inner ear .....the sound is collected by the pinna (outer ear) and then via auditory cannal the vibrations are sent to the eardrums or the tymphanic memebrane where the eardums vibrate when the sound hits it after this the sound enters the middle ear ..there are 3 main bones over there which are hammer, anvil and stirrup which passes the sound vibration to the inner ear where there is choclea which anplifies the sound vibration and later these vibrations are sent to the brain via auditory nerve. Hope this answer helps!
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Answer 2

Hi friend,

The outer ear called Pinna collects the sound vibrations from the surroundings . These vibrations travel through the auditory canal and reaches to yeh eardrum. Because of the successive compressions and rarefactions the eardrum vibrates . These vibrations are amplifies several times into pressure variations by the three bones present in our middle ear.(hammer,anvil,stirrup). These pressure variations get converted into electrical signals by the cochlea present in our inner ear. These electrical signals are perceived by the brain through the auditory nerve and the brain interprets them as sound and responds to it.

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