CAOHC EVALUATION EXAM 2026 QUESTIONS AND
SOLUTIONS GRADED A+
✔✔STANDARD AUDIOMETRIC FREQUENCIES WHEN BEGINNING A HEARING
TEST: - ✔✔START HEARING TEST AT 1000 HZ IN THE FIRST EAR AT 40 DB OF
LOUDNESS. FOR THE SECOND EAR, YOU START THE TEST AT 500 HZ.
✔✔True or False: THE OHC MAY NOT PERFORM SPEECH AUDIOMETRY, MASKIN,
BONE CONDUCTION, ABRS, OAES - ✔✔TRUE
✔✔THE OUTERMOST PART OF THE EAR IS CALLED - ✔✔pinna
✔✔THE PINNA IS RESPONSIBLE FOR - ✔✔FUNNELING SOUNDWAVES INTO THE
EAR CANAL
✔✔True or False: BOTH THE EAR CANAL AND PINNA TRANSFER SOUND FROM
THE OUTER EAR TO MIDDLE EAR AT THE LEVEL OF THE TYMPANIC MEMBRANE
- ✔✔TRUE
✔✔. THE TECHNICAL TERM FOR THE EARDRUM IS THE - ✔✔TYMPANIC
MEMBRANE.
✔✔THIS SPECIFIC PART OF THE EAR IS LOCATED AT THE BEGINNING OF THE
MIDDLE EAR. IT PROTECTS THE MIDDLE EAR STRUCTURES. - ✔✔TYMPANIC
MEMBRANE
✔✔ANOTHER NAME FOR THE TYMPANIC MEMBRANE IS - ✔✔EAR DRUM
✔✔THE TECHNICAL TERM FOR EARWAX IS ___________________
(IT CAN SOMETIMES INTERFERE WITH THE COMFORT AND PROPER USE OF
EARPLUGS AS WELL AS HEARING TEST RESULTS). - ✔✔CERUMEN
✔✔INSIDE THE MIDDLE EAR ARE SITUATED THREE SMALL BONES CALLED -
✔✔THE OSSICLES WHOSE NAMES ARE THE MALLEUS, INCUS AND STAPES
✔✔THE FUNCTION OF THE OSSICULAR CHAIN IS TO - ✔✔CONDUCT SOUND
INTO THE INNER EAR
✔✔. THE INNER EAR OF THE _______________, HOUSES THE MECHANISM FOR
BALANCE AS WELL AS HEARING - ✔✔LABYRINTH
✔✔IN THE INNER EAR, THE SNAIL SHAPED END ORGAN FOR HEARING IS THE -
✔✔COCHLEA
, ✔✔WHAT IS SEATED ON THE BASILAR MEMBRANE TO CONVERT THE
HYDRAULIC ENERGY INTO ELECTRICAL ENERGY? - ✔✔TINY HAIR CELLS
✔✔NOISE-EXPOSED PEOPLE TEND TO - ✔✔LOSE HEARING FIRST IN THE HIGH
TONES/FREQUENCIES
✔✔OTOLOGISTS - ✔✔MEDICAL SPECIALIST WHO SPECIALIZES FURTHER IN
EARS
✔✔PHYSICIANS SPECIALIZING IN THE DISEASES OF THE EAR, NOSE AND
THROAT ARE CALLED - ✔✔OTOLARYNGOLOISTS
✔✔. IN WHAT PART OF THE AUDITORY SYSTEM DOES A SENSORINERUAL
HEARING LOSS OCCUR IN: - ✔✔THE INNER EAR OR NERVE OF HEARING
(COCHLEA).
✔✔BESIDES NOISE, ONE OF THE MOST FREQUENT CONTRIBUTORS TO
SENSORINEURAL HEARING LOSS IS - ✔✔PRESBYCUSIS OR THE HEARING LOSS
FROM AGING
✔✔TRUE OR FALSE: THE OHC WILL NOT BE RESPONSIBLE FOR TAKING NOISE
MEASUREMENTS. - ✔✔TRUE
✔✔THE ASPECT OF SOUND THAT IS PERCEIVED AS LOUDNESS IS CALLED -
✔✔INTENSITY
✔✔INTENSITY IS QUANTIFIED IN TERMS OF - ✔✔DECIBELS
✔✔A SOUND'S FREQUENCY IS PERCEIVED BY THE EAR AS - ✔✔PITCH
✔✔PITCH IS QUANTIFIED IN TERMS OF - ✔✔HERTZ
✔✔THE RELATIONSHIP BETWEEN LEVEL AND DURATION OF AN ALLOWABLE
NOISE EXPOSURE IS CALLED THE - ✔✔EXCHANGE RATE
✔✔OSHA AND DOD USE A __ DB PEL AND A __ DB EXCHANGE RATE WHEREAS
NIOSH USES A __ DB PEL AND A __ DB EXCHANGE RATE. - ✔✔90 - 5
85 - 3
✔✔MOST OCCUPATIONAL NOISE EXPOSURES FLUCTUATED IN LEVEL DURING
THE WORKSHIFT. THE LOGARITHMIC AVERAGE SOUND EXPOSURE LEVEL
SOLUTIONS GRADED A+
✔✔STANDARD AUDIOMETRIC FREQUENCIES WHEN BEGINNING A HEARING
TEST: - ✔✔START HEARING TEST AT 1000 HZ IN THE FIRST EAR AT 40 DB OF
LOUDNESS. FOR THE SECOND EAR, YOU START THE TEST AT 500 HZ.
✔✔True or False: THE OHC MAY NOT PERFORM SPEECH AUDIOMETRY, MASKIN,
BONE CONDUCTION, ABRS, OAES - ✔✔TRUE
✔✔THE OUTERMOST PART OF THE EAR IS CALLED - ✔✔pinna
✔✔THE PINNA IS RESPONSIBLE FOR - ✔✔FUNNELING SOUNDWAVES INTO THE
EAR CANAL
✔✔True or False: BOTH THE EAR CANAL AND PINNA TRANSFER SOUND FROM
THE OUTER EAR TO MIDDLE EAR AT THE LEVEL OF THE TYMPANIC MEMBRANE
- ✔✔TRUE
✔✔. THE TECHNICAL TERM FOR THE EARDRUM IS THE - ✔✔TYMPANIC
MEMBRANE.
✔✔THIS SPECIFIC PART OF THE EAR IS LOCATED AT THE BEGINNING OF THE
MIDDLE EAR. IT PROTECTS THE MIDDLE EAR STRUCTURES. - ✔✔TYMPANIC
MEMBRANE
✔✔ANOTHER NAME FOR THE TYMPANIC MEMBRANE IS - ✔✔EAR DRUM
✔✔THE TECHNICAL TERM FOR EARWAX IS ___________________
(IT CAN SOMETIMES INTERFERE WITH THE COMFORT AND PROPER USE OF
EARPLUGS AS WELL AS HEARING TEST RESULTS). - ✔✔CERUMEN
✔✔INSIDE THE MIDDLE EAR ARE SITUATED THREE SMALL BONES CALLED -
✔✔THE OSSICLES WHOSE NAMES ARE THE MALLEUS, INCUS AND STAPES
✔✔THE FUNCTION OF THE OSSICULAR CHAIN IS TO - ✔✔CONDUCT SOUND
INTO THE INNER EAR
✔✔. THE INNER EAR OF THE _______________, HOUSES THE MECHANISM FOR
BALANCE AS WELL AS HEARING - ✔✔LABYRINTH
✔✔IN THE INNER EAR, THE SNAIL SHAPED END ORGAN FOR HEARING IS THE -
✔✔COCHLEA
, ✔✔WHAT IS SEATED ON THE BASILAR MEMBRANE TO CONVERT THE
HYDRAULIC ENERGY INTO ELECTRICAL ENERGY? - ✔✔TINY HAIR CELLS
✔✔NOISE-EXPOSED PEOPLE TEND TO - ✔✔LOSE HEARING FIRST IN THE HIGH
TONES/FREQUENCIES
✔✔OTOLOGISTS - ✔✔MEDICAL SPECIALIST WHO SPECIALIZES FURTHER IN
EARS
✔✔PHYSICIANS SPECIALIZING IN THE DISEASES OF THE EAR, NOSE AND
THROAT ARE CALLED - ✔✔OTOLARYNGOLOISTS
✔✔. IN WHAT PART OF THE AUDITORY SYSTEM DOES A SENSORINERUAL
HEARING LOSS OCCUR IN: - ✔✔THE INNER EAR OR NERVE OF HEARING
(COCHLEA).
✔✔BESIDES NOISE, ONE OF THE MOST FREQUENT CONTRIBUTORS TO
SENSORINEURAL HEARING LOSS IS - ✔✔PRESBYCUSIS OR THE HEARING LOSS
FROM AGING
✔✔TRUE OR FALSE: THE OHC WILL NOT BE RESPONSIBLE FOR TAKING NOISE
MEASUREMENTS. - ✔✔TRUE
✔✔THE ASPECT OF SOUND THAT IS PERCEIVED AS LOUDNESS IS CALLED -
✔✔INTENSITY
✔✔INTENSITY IS QUANTIFIED IN TERMS OF - ✔✔DECIBELS
✔✔A SOUND'S FREQUENCY IS PERCEIVED BY THE EAR AS - ✔✔PITCH
✔✔PITCH IS QUANTIFIED IN TERMS OF - ✔✔HERTZ
✔✔THE RELATIONSHIP BETWEEN LEVEL AND DURATION OF AN ALLOWABLE
NOISE EXPOSURE IS CALLED THE - ✔✔EXCHANGE RATE
✔✔OSHA AND DOD USE A __ DB PEL AND A __ DB EXCHANGE RATE WHEREAS
NIOSH USES A __ DB PEL AND A __ DB EXCHANGE RATE. - ✔✔90 - 5
85 - 3
✔✔MOST OCCUPATIONAL NOISE EXPOSURES FLUCTUATED IN LEVEL DURING
THE WORKSHIFT. THE LOGARITHMIC AVERAGE SOUND EXPOSURE LEVEL
