The external ear
which we see is known as ……(i)……. This
part collects the sound and sends it to
the auditory canal. The sound in the
form of compressions and rarefactions
reaches the ……(ii)………, and it begins to
vibrate. The vibrations are amplified
several times by three bones : the
hammer, ..........(iii)……….. and stirrup.
The amplified vibration and then
transmitted to the …..(iv)……., which
converts them into electric signals.
These electric signals are sent to the
brain via the auditory nerve, and the
brain interprets them as sound.
(i) (ii) (iii) (iv)
1) Cochlea Ear drum Pinna Anvil
2) Ear drum Anvil Cochlea Pinna
3) Pinna Ear drum Cochlea Anvil
4) Pinna Ear drum Anvil Cochlea
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