Answer:
The function of the human ear is shown in figure.
(i) The outer ear collects sound wave which are conducted through the auditory canal.
(ii) These waves fall on the ear drum and set it into vibrations.
(iii) 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.
(iv)The inner ear which contains cochlea and is filled with a fluid converts these pressure variations into the electrical signals.
(v) These electrical signals are conveyed to the brain via auditory nerve for interpretation.
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