explain how the human ear works.
Answers
Explanation:
HEY MATE ......
➡️The outer ear is called ‘pinna’. It collects the sound from the surroundings.
➡️ The collected sound passes through the auditory canal.
➡️At the end of the auditory canal there is a thin membrane called the ear drum or tympanic membrane.
➡️ 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 when a rarefaction reaches it. In this way the eardrum vibrates.
➡️The vibrations are amplified several times by three bones (the hammer, anvil and stirrup) in the middle ear.
➡️The middle ear transmits the amplified pressure variations received from the sound wave to the inner ear.
➡️In 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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