NBC HIS Certification EXAM 2025/2026
ACCURATE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS
<LATEST VERSION>
1. Cholesteatoma - ANSWER ✓ a tumor or growth typically
occurring in the attic of the middle ear. it can perforate the TM and
invade EC. an ODOROUS discharge is present. immediate medical
referral is essential. even after treatment, permanent conductive
loss may be present
2. Retrochochlear - ANSWER ✓ disorders that impact the auditory
nerve. usually caused by an acoustic neuroma or other tumors
3. Head shadow effect - ANSWER ✓ the loss of intensity of a sound
as the sound travels around the head
4. Binaural squelch effect - ANSWER ✓ an improvement in listening
in noise when wearing two hearing aids instead of one, resulting a
2-to-3-dB improvement in signal-to-noise ratio
5. What are the benefits of hearing binaurally? - ANSWER ✓
localization and hearing better in background noise
6. The place theory of hearing - ANSWER ✓ the theory that different
areas of the basilar membrane respond to different frequencies.
base-high tones; apical-low tones
, 7. 12. The fluid that circulates throughout the scala vestibuli and the
scala tympani is __________ and the fluid that circulates
throughout the scala media is __________ . - ANSWER ✓
perilymph; endolymph
8. binaural fusion - ANSWER ✓ ability to understand and process
two different messages presented simultaneously
9. binaural summation - ANSWER ✓ the increase of loudness of
sounds when both ears hear together
10. noise-induced hearing loss - ANSWER ✓ Hearing loss or
impairment resulting from exposure to loud sound.
11. presbycusis - ANSWER ✓ age related hearing loss
12. phonemic regression - ANSWER ✓ poor auditory
comprehension often associated with advanced age
13. Most common cause of hearing loss at 4000 Hz - ANSWER
✓ Acoustic Trauma
14. A mother comes in worried her hearing is worse since the
birth of her first kid what is likely happening - ANSWER ✓
Otosclerosis
15. A large dip in the 6000Hz in only one ear with positive tone
decay is indicative of - ANSWER ✓ Possible retro-cochlear tumor
16. Patient comes in complaining his hearing aids worked fine
until they were cleaned, now they are weak and feeding back what
is the likely cause of this problem - ANSWER ✓ Receiver tubing
is pushed in
ACCURATE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS
<LATEST VERSION>
1. Cholesteatoma - ANSWER ✓ a tumor or growth typically
occurring in the attic of the middle ear. it can perforate the TM and
invade EC. an ODOROUS discharge is present. immediate medical
referral is essential. even after treatment, permanent conductive
loss may be present
2. Retrochochlear - ANSWER ✓ disorders that impact the auditory
nerve. usually caused by an acoustic neuroma or other tumors
3. Head shadow effect - ANSWER ✓ the loss of intensity of a sound
as the sound travels around the head
4. Binaural squelch effect - ANSWER ✓ an improvement in listening
in noise when wearing two hearing aids instead of one, resulting a
2-to-3-dB improvement in signal-to-noise ratio
5. What are the benefits of hearing binaurally? - ANSWER ✓
localization and hearing better in background noise
6. The place theory of hearing - ANSWER ✓ the theory that different
areas of the basilar membrane respond to different frequencies.
base-high tones; apical-low tones
, 7. 12. The fluid that circulates throughout the scala vestibuli and the
scala tympani is __________ and the fluid that circulates
throughout the scala media is __________ . - ANSWER ✓
perilymph; endolymph
8. binaural fusion - ANSWER ✓ ability to understand and process
two different messages presented simultaneously
9. binaural summation - ANSWER ✓ the increase of loudness of
sounds when both ears hear together
10. noise-induced hearing loss - ANSWER ✓ Hearing loss or
impairment resulting from exposure to loud sound.
11. presbycusis - ANSWER ✓ age related hearing loss
12. phonemic regression - ANSWER ✓ poor auditory
comprehension often associated with advanced age
13. Most common cause of hearing loss at 4000 Hz - ANSWER
✓ Acoustic Trauma
14. A mother comes in worried her hearing is worse since the
birth of her first kid what is likely happening - ANSWER ✓
Otosclerosis
15. A large dip in the 6000Hz in only one ear with positive tone
decay is indicative of - ANSWER ✓ Possible retro-cochlear tumor
16. Patient comes in complaining his hearing aids worked fine
until they were cleaned, now they are weak and feeding back what
is the likely cause of this problem - ANSWER ✓ Receiver tubing
is pushed in
