1. For which of the following instruments/apparatus do national standards or uniform performance standards for calibration exist?
A. Pure-tone audiometers
B. Otoacoustic emissions
C. Auditory brainstem response
D. All have calibration standards.
2. Which of these is MOST likely to be introduced deliberately by the examiner during an audiometric examination?
A. A distorted tone
B. Switching transients
C. A masking noise
D. None of the above
3. One component required in the production of sound is a hearing mechanism to receive it. The other three necessary components include all of the following EXCEPT
4. The outer ear is classified as which kind of device?
5. The middle ear is classified as which kind(s) of device(s)?
C. Both of these
D. Neither of these
6. The inner ear is classified as which kind(s) of device(s)?
D. All of the above
7. Without the middle ear, if sound were to reach the inner ear, to the hearer it would be
A. virtually nonexistent.
B. so loud it caused nerve damage.
C. distorted in its frequencies.
D. impossible to interpret.
8. Which of the following is MOST likely to cause a conductive hearing loss?
B. Otitis media
C. Noise exposure
D. Birth trauma
9. Which of these is MOST likely to cause a sensorineural hearing loss?
A. A foreign object
B. Impacted cerumen
C. Ménière’s disease
D. Serous otitis media
10. Which of the following is NOT a true statement about conductive and sensorineural hearing losses?
A. Conductive hearing losses are often reversible.
B. Sensorineural hearing loss is usually permanent.
C. Sensorineural losses also impair discrimination.
D. Conductive loss does not affect threshold levels.