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1. What is the purpose of the diaphragm on the bell of a stethoscope? To___

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2. Sound level (measured in decibels, dB) is a subjective measure of the loudness of a sound. A sound level of 90 dB____

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3. When you rise in altitude rapidly, why do your internal ears feel uncomfortable until they “pop”?

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4. Which part of the ear contains the apparatus that is used to distinguish between different frequencies of sound?

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5. Sound produces vibrations in the cochlear fluid of the inner ear. The movement of the fluid then produces motion in which of the following?

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6. What are the names of the three ossicles in the middle ear?

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7. What is the purpose of the muscles known as the stapedius and the tensor tympani?

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8. Which chamber or section of the ear is NOT filled with air?

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9. If the frequency of a sound wave is increased from 50 to 3000 Hz, its loudness also increases. This occurs because:

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10. Which of the following is NOT a small bone involved in hearing?

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11. The ossicles of the ear pass on sound vibrations to the fluid in the inner ear. In what structure is this fluid located?

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12. Sound waves are conducted from the air outside the ear to the inner ear by the processes of___

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13. To which membrane is the ear’s organ of Corti attached?

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14. The inner ear (or internal ear) may be described as a series of tubes. What are the tubes filled with?

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15. Which membrane lies over the hair cells found in the organ of Corti?

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16. What are the cells found in the maculae of the utricle and saccule that are responsible for our sense of equilibrium?

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17. Which one of the following statements is untrue?

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18. Which one of the following has the correct order of the path taken by sound energy as it is transmitted through the ear?

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19. What is the function of the middle ear ossicles?

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20. Which structure(s) control reflex movement of the head and neck in response to auditory stimuli?

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21. By which of the following pathways does sound entering the ear reach the organ of Corti?

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22. Which of the following is an example of a “special sense”?

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23. What is the function of the tensor tympani and stapedius muscles in the middle ear?

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24. Through which structure must sound pass in order to enter the middle ear?

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25. Which of the following auditory structures are filled with fluid?

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26. The loudness of a sound wave as perceived by the human ear depends on which of the following pairs of wave properties?

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27. The unit of sound level is the decibel (dB) and the unit of sound frequency is the hertz (Hz). Which sounds below, characterised by their sound level and frequency, would sound loudest to the human ear?

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28. For which condition is a hearing aid most successful at treating?

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29. Which of the following situations constitutes sensorineural hearing loss rather than conductive hearing loss?

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30. Which structure lies on the boundary between the middle and inner ear and has the stapes bound to it?


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