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CAOHC STUDY GUIDE ACTUAL
2025/2026 QUESTIONS AND 100%
CORRECT ANSWERS
CAOHC's primary objective is to - (ANSWER)Educate, inform, and guide industry
and those serving industry on successful implementation of occupational HCP's to
prevent occupational hearing loss
CAOHC recertification: - (ANSWER)Required every 5 years
The sector with the highest incidence of occupational hearing loss: -
(ANSWER)Manufacturing
Auditory effects of noise exposure include noise induced hearing loss, hyperacusis
and: - (ANSWER)tinnitus
Noise induced hearing loss typically occurs initially at: - (ANSWER)4000 Hz
Early signs/symptoms of a noise induced hearing loss include tinnitus, difficulty
understanding in background noise and: - (ANSWER)Reliance on visual cues
Typical characteristics of a noise induced hearing loss include a notch at 4000 hz,
variable susceptibility among individuals: - (ANSWER)Bilateral and sensorineural
, 2
The 3 tiny bones in the middle ear collectivly form the: - (ANSWER)Ossicular
chain
The bones of the middle ear (in order from ear drum to oval window are the: -
(ANSWER)Malleus, incus, stapes (MIS)
The primary function of the outer ear is to: - (ANSWER)collect sound waves and
channel them down the ear canal
Type of hearing loss that results from cerumen impaction: - (ANSWER)conductive
Hearing loss due to aging: - (ANSWER)presbycusis
Part of ear damaged by hazardous noise exposure: - (ANSWER)Organ of the corti
(cochlea)
Frequency is perceived as pitch, is measured in Hertz, and: - (ANSWER)Does not
have a bearing on risk of developing hearing loss.
Range of Human Frequency range at birth: - (ANSWER)20-20,000 Hz
A decibal is the unit of measurement for: - (ANSWER)Intensity
CAOHC STUDY GUIDE ACTUAL
2025/2026 QUESTIONS AND 100%
CORRECT ANSWERS
CAOHC's primary objective is to - (ANSWER)Educate, inform, and guide industry
and those serving industry on successful implementation of occupational HCP's to
prevent occupational hearing loss
CAOHC recertification: - (ANSWER)Required every 5 years
The sector with the highest incidence of occupational hearing loss: -
(ANSWER)Manufacturing
Auditory effects of noise exposure include noise induced hearing loss, hyperacusis
and: - (ANSWER)tinnitus
Noise induced hearing loss typically occurs initially at: - (ANSWER)4000 Hz
Early signs/symptoms of a noise induced hearing loss include tinnitus, difficulty
understanding in background noise and: - (ANSWER)Reliance on visual cues
Typical characteristics of a noise induced hearing loss include a notch at 4000 hz,
variable susceptibility among individuals: - (ANSWER)Bilateral and sensorineural
, 2
The 3 tiny bones in the middle ear collectivly form the: - (ANSWER)Ossicular
chain
The bones of the middle ear (in order from ear drum to oval window are the: -
(ANSWER)Malleus, incus, stapes (MIS)
The primary function of the outer ear is to: - (ANSWER)collect sound waves and
channel them down the ear canal
Type of hearing loss that results from cerumen impaction: - (ANSWER)conductive
Hearing loss due to aging: - (ANSWER)presbycusis
Part of ear damaged by hazardous noise exposure: - (ANSWER)Organ of the corti
(cochlea)
Frequency is perceived as pitch, is measured in Hertz, and: - (ANSWER)Does not
have a bearing on risk of developing hearing loss.
Range of Human Frequency range at birth: - (ANSWER)20-20,000 Hz
A decibal is the unit of measurement for: - (ANSWER)Intensity
