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CAOHC Multiple Choice Exam UPDATED ACTUAL Questions and CORRECT Answers

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CAOHC Multiple Choice Exam UPDATED ACTUAL Questions and CORRECT Answers

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CAOHC Multiple Choice Exam UPDATED ACTUAL Questions and CORRECT
Answers

Decibel (dB) Unit of measurement for intensity/loudness
Hertz (Hz) Unit of measurement for frequency/pitch
Frequency range for humans at birth 20 Hz to 20,000 Hz
Frequency range for human speech 250 Hz to 4,000 Hz
Frequency range humans hear BEST 500 Hz to 4,000 Hz
Range of human intensity 0 dB to 140 dB
Range of intensity for normal hearing 0 dB HL to 25 dB HL
Hearing loss or impairment resulting from interference
Conductive Hearing Loss
with the transmission of sound waves to the cochlea
Hearing loss caused by damage to the cochlea's receptor
Sensorineural hearing loss (nerve deafness)
cells or to the auditory nerves
Combination of conductive and sensorineural types in
Mixed hearing loss
same ear
A reversible desensitization in hearing that is perceived to
Temporary Threshold Shift (TTS)
disappear after removal from hazardous noise
Part of the outer ear that collects sound waves Pinna
Part of the middle ear that equalizes the ear to atmospher-
Eustachian Tube
ic pressure
Impacted cerumen is an example of this type of hearing
Conductive
loss:
Noise induced hearing loss (NIHL) is an example of this
Sensorineural
type of hearing loss:
Term for aging of the ear which results in a sensorineural
Presbycusis
hearing loss

, Promote hearing loss prevention by enhancing the quality
Mission of CAOHC
of occupational practices




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