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09/01/2021 12:44 pm
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Explain how the human ear works.
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09/01/2021 12:47 pm
The function of the human ear is shown in figure.
- The outer ear collects sound wave which are conducted through the auditory canal.
- These waves fall on the ear drum xl set it into vibrations.
- The middle ear which is of the size of a small marble and houses ossicles (three bones : hammer, anvil and stirrup) amplifies these oscillations about 60 times.
- The inner ear which contains cochlea and is filled with a fluid converts these pressure variations into the electrical signals.
- These electrical signals are conveyed to the brain via auditory nerve for interpretation.