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CAOHC EXAM QUESTIONS AND ANSWERS
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CAOHC EXAM QUESTIONS AND ANSWERS
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CAOHC EXAM QUESTIONS AND ANSWERSWhat is the acronym for? - Answers- Council for Accreditation in Occupational Hearing
Conservation
What is the primary purpose of CAOHC? - Answers- It is to implement resources and
guidance to facilitate the practice of hearing loss prevention through standardized
training and credentialing of OHCs.
CAOHC council is comprised of ____ professional organizations. - Answers- 9
professional organizations
CAOHC provides training for - Answers- OHCs, CDs, and PSs
CAOHC Certification period is for ____years. - Answers- 5 years
Hazardous noise exposure can result in both _____ and ______ effects on the
individual. - Answers- physiological and psychological
High blood pressure and increased stress and fatigue would be examples of a (n) ___
effect of hearing loss. - Answers- non-auditory
Ringing or buzzing in the ears (tinnitus) and difficulty understanding speech would be
examples of a (n) effect of hearing loss. - Answers- auditory
Noise induced hearing loss (NIHL) tends to show a notch at ______Hz. This is
considered a _______ pitch sound. - Answers- 4000Hz
High
The clarity or understanding of speech is dependent on good hearing in the ________
frequency range. - Answers- high
Damage to hearing is a function of both ______ and _______ of the sound. - Answers-
duration intensity
A temporary reduction in hearing that may recover is called a _____ ______ ______. -
Answers- temporary threshold shift
A permanent worsening of hearing is called ____ _____ _____. - Answers- permanent
threshold shift.
NIHL is a common occupational illness and the highest percentage of workers exposed
is in ____________________. - Answers- manufacturing
The three major parts of the ear are the ______,_______ and _______ear. - Answers-
outer, middle and inner ear
, The three types of hearing loss are ________. _________. and ________. - Answers-
conductive, sensorineural, and mixed
A __________ hearing loss can be treated and occurs in the outer or middle ear. -
Answers- conductive
Damage to the inner ear or the auditory nerve is a __________ hearing loss and is
generally irreversible. - Answers- sensorineural
When there is a problem in either the outer/middle ear, and the inner ear, this is known
as a ____________ hearing loss. - Answers- mixed
The outer ear is comprised of the ________ or _________ which helps to localize
sound, and the ________________ where wax (cerumen) is produced. - Answers-
pinna or auricle, external auditory canal
An ear infection in the outer ear is referred to as ________ ________ and may cause a
_____________ hearing loss. - Answers- otitis externa conductive
Important landmarks to look for when viewing the eardrum are the _________ and the
______________. - Answers- 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 _________________. -
Answers- malleus (hammer), incus (anvil) stapes (stirrup)
The ________ _________ ventilates the middle ear space. - Answers- 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. - Answers- Oval
Round
The _______________ system, which is part of the inner ear, controls spatial
orientation and balance. - Answers- vestibular
Cochlear______ ________ stimulated by a shearing action send an electrical impulse
to the brain. - Answers- hair cells
The most common inner ear problem seen in our military and veteran population is
____________________ hearing loss. - Answers- noise-induced (sensorineural)
Heavy metals, asphyxiants (carbon monoxide), and some medications (diuretics,
aminoglycosides, and chemotherapeutics) are called ________________. - Answers-
ototoxins
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