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Q.

What is the purpose of the pinna?

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a

To gather sound waves from the air

b

To equalize pressure

c

To amplify the sound

d

To send auditory signals to the brain

answer is A.

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Detailed Solution

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  • The outer ear is called the ‘pinna’. It collects the sound from the surroundings.
  • It is made up of ridged cartilage that is covered in skin. 
  • The pinna directs sound into the external auditory canal, a narrow tube that leads to the eardrum.

Therefore, ' To gather sound waves from the air ' is the correct response.

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