CAOHC CERTIFICATION EXAM|ACTUAL EXAM QUESTIONS AND
WELL DETAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW
2026/2027 UPDATE
What is the acronym for CAOHC? - ANSWER Council for Accreditation in Occupational
Hearing Conservation
What is the primary purpose of CAOHC? - ANSWER It is to implement resources and guid-
ance to facilitate the practice of hearing loss prevention through standardized training and
credentialing of OHCs.
CAOHC council is comprised of ____ professional organizations. - ANSWER 9 professional
organizations
CAOHC provides training for - ANSWER OHCs, CDs, and PSs
CAOHC Certification period is for ____years. - ANSWER 5 years
Hazardous noise exposure can result in both _____ and ______ effects on the individual. -
ANSWER physiological and psychological
High blood pressure and increased stress and fatigue would be examples of a (n) ___ effect
of hearing loss. - ANSWER non-auditory
Ringing or buzzing in the ears (tinnitus) and difficulty understanding speech would be exam-
ples of a (n) effect of hearing loss. - ANSWER auditory
Noise induced hearing loss (NIHL) tends to show a notch at ______Hz. This is considered a
_______ pitch sound. - ANSWER 4000Hz
1
,High
The clarity or understanding of speech is dependent on good hearing in the ________ fre-
quency range. - ANSWER high
Damage to hearing is a function of both ______ and _______ of the sound. - ANSWER
duration intensity
A temporary reduction in hearing that may recover is called a _____ ______ ______. - AN-
SWER temporary threshold shift
A permanent worsening of hearing is called ____ _____ _____. - ANSWER permanent
threshold shift.
NIHL is a common occupational illness and the highest percentage of workers exposed is in
____________________. - ANSWER manufacturing
The three major parts of the ear are the ______,_______ and _______ear. - ANSWER
outer, middle and inner ear
The three types of hearing loss are ________. _________. and ________. - ANSWER con-
ductive, sensorineural, and mixed
A __________ hearing loss can be treated and occurs in the outer or middle ear. - AN-
SWER conductive
Damage to the inner ear or the auditory nerve is a __________ hearing loss and is generally
irreversible. - ANSWER sensorineural
2
, When there is a problem in either the outer/middle ear, and the inner ear, this is known as a
____________ hearing loss. - ANSWER mixed
The outer ear is comprised of the ________ or _________ which helps to localize sound, and
the ________________ where wax (cerumen) is produced. - ANSWER pinna or auricle,
external auditory canal
An ear infection in the outer ear is referred to as ________ ________ and may cause a
_____________ hearing loss. - ANSWER otitis externa conductive
Important landmarks to look for when viewing the eardrum are the _________ and the
______________. - ANSWER head of the malleus cone of light
The three ossicles, in order from that attached to the eardrum to the one that enters the
oval window, are the ________, the ______________, and the _________________. - AN-
SWER malleus (hammer), incus (anvil) stapes (stirrup)
The ________ _________ ventilates the middle ear space. - ANSWER Eustachian tube
The ________window is located at the footplate of the stapes and when vibrated sets the
cochlear fluid into motion and the __________window functions as a pressure relief port for
the fluid. - ANSWER Oval
Round
The _______________ system, which is part of the inner ear, controls spatial orientation and
balance. - ANSWER vestibular
Cochlear______ ________ stimulated by a shearing action send an electrical impulse to the
brain. - ANSWER hair cells
3
WELL DETAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW
2026/2027 UPDATE
What is the acronym for CAOHC? - ANSWER Council for Accreditation in Occupational
Hearing Conservation
What is the primary purpose of CAOHC? - ANSWER It is to implement resources and guid-
ance to facilitate the practice of hearing loss prevention through standardized training and
credentialing of OHCs.
CAOHC council is comprised of ____ professional organizations. - ANSWER 9 professional
organizations
CAOHC provides training for - ANSWER OHCs, CDs, and PSs
CAOHC Certification period is for ____years. - ANSWER 5 years
Hazardous noise exposure can result in both _____ and ______ effects on the individual. -
ANSWER physiological and psychological
High blood pressure and increased stress and fatigue would be examples of a (n) ___ effect
of hearing loss. - ANSWER non-auditory
Ringing or buzzing in the ears (tinnitus) and difficulty understanding speech would be exam-
ples of a (n) effect of hearing loss. - ANSWER auditory
Noise induced hearing loss (NIHL) tends to show a notch at ______Hz. This is considered a
_______ pitch sound. - ANSWER 4000Hz
1
,High
The clarity or understanding of speech is dependent on good hearing in the ________ fre-
quency range. - ANSWER high
Damage to hearing is a function of both ______ and _______ of the sound. - ANSWER
duration intensity
A temporary reduction in hearing that may recover is called a _____ ______ ______. - AN-
SWER temporary threshold shift
A permanent worsening of hearing is called ____ _____ _____. - ANSWER permanent
threshold shift.
NIHL is a common occupational illness and the highest percentage of workers exposed is in
____________________. - ANSWER manufacturing
The three major parts of the ear are the ______,_______ and _______ear. - ANSWER
outer, middle and inner ear
The three types of hearing loss are ________. _________. and ________. - ANSWER con-
ductive, sensorineural, and mixed
A __________ hearing loss can be treated and occurs in the outer or middle ear. - AN-
SWER conductive
Damage to the inner ear or the auditory nerve is a __________ hearing loss and is generally
irreversible. - ANSWER sensorineural
2
, When there is a problem in either the outer/middle ear, and the inner ear, this is known as a
____________ hearing loss. - ANSWER mixed
The outer ear is comprised of the ________ or _________ which helps to localize sound, and
the ________________ where wax (cerumen) is produced. - ANSWER pinna or auricle,
external auditory canal
An ear infection in the outer ear is referred to as ________ ________ and may cause a
_____________ hearing loss. - ANSWER otitis externa conductive
Important landmarks to look for when viewing the eardrum are the _________ and the
______________. - ANSWER head of the malleus cone of light
The three ossicles, in order from that attached to the eardrum to the one that enters the
oval window, are the ________, the ______________, and the _________________. - AN-
SWER malleus (hammer), incus (anvil) stapes (stirrup)
The ________ _________ ventilates the middle ear space. - ANSWER Eustachian tube
The ________window is located at the footplate of the stapes and when vibrated sets the
cochlear fluid into motion and the __________window functions as a pressure relief port for
the fluid. - ANSWER Oval
Round
The _______________ system, which is part of the inner ear, controls spatial orientation and
balance. - ANSWER vestibular
Cochlear______ ________ stimulated by a shearing action send an electrical impulse to the
brain. - ANSWER hair cells
3
