Sound Waves and Hearing Process
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Questions and Answers

What is the definition of sound pressure level?

  • The ratio of sound pressure to the reference sound pressure in watts/m2
  • The change in the static pressure of any media when a sound wave is passing through
  • The sound power per unit area
  • The logarithm of the ratio of a given sound pressure to the reference sound pressure in decibels (correct)

What is the function of the outer ear part called 'Pinna'?

  • Converts sound into electrical signals
  • Transmits sound vibrations into nerve impulses
  • Collects sound and acts as a funnel to amplify sound (correct)
  • Amplifies sound and directs it toward the ear canal

What does the inner ear part called 'Cochlea' do?

  • Transmits sound vibrations into nerve impulses (correct)
  • Converts sound into electrical signals
  • Amplifies sound and directs it toward the ear canal
  • Interprets sound vibrations as electrical impulses

What does the term 'mechanoelectrical transduction' refer to?

<p>The conversion of sound into electrical signals in the inner ear (C)</p> Signup and view all the answers

What is the speed and properties of sound waves determined by?

<p>Density and stiffness of the material (B)</p> Signup and view all the answers

What is the definition of sound intensity?

<p>The sound power per unit area (B)</p> Signup and view all the answers

What is the main function of the auditory canal?

<p>Protects the eardrum from shocks and prevents harmful items from entering the ear canal (B)</p> Signup and view all the answers

What is the function of the tympanic membrane?

<p>Transfers the sound that comes from the air into the ossicles of the middle ear (D)</p> Signup and view all the answers

What is the resonant frequency of the middle ear?

<p>1000 Hz (A)</p> Signup and view all the answers

What is the role of the Eustachian tube in the middle ear?

<p>Equalizes pressure between the middle ear and the atmosphere (C)</p> Signup and view all the answers

What is the main function of the stapes in the middle ear?

<p>Reduces sound striking the relatively large tympanic membrane (B)</p> Signup and view all the answers

What is a function of the malleus in the middle ear?

<p>Long handle attached to the eardrum (B)</p> Signup and view all the answers

What is a function of the incus in the middle ear?

<p>Bridge bone between the malleus and stapes (C)</p> Signup and view all the answers

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