SHS 311 EXAM 2A
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With Elaborated 100%
Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
1. What function does the pinna provide?
A. Equalizes pressure across the tympanic membrane
B. Filters sound so that the spectrum of sound depends on the location of the sound source
C. Converts vibration into neural code
D. Protects the inner ear from over-stimulation
{ANSWER: B. Filters sound so that the spectrum of sound depends on the location of the
sound source}
2. What does the pinna do?
A. Provides cues for sound location
B. Matches impedance between air and fluid
C. Transmits neural code to the brainstem
D. Provides metabolic energy to the cochlea
{ANSWER: A. Provides cues for sound location}
3. What is the approximate frequency range for the peak of the total outer-ear canal
resonance?
A. 200-600 Hz
B. 1000-2000 Hz
C. 2000-6000 Hz
D. 8000-12000 Hz
{ANSWER: C. 2000-6000 Hz}
4. The tympanic membrane moves more in the middle part that is connected to the
manubrium. What is this phenomenon called?
A. Lever action
B. Area difference
C. Standing wave
D. Buckling
{ANSWER: D. Buckling}
,5. The Eustachian tube helps solve what problem?
A. Transmission is ineffective if the middle ear cavity is enclosed and pressure is different on
both sides of the tympanic membrane
B. The ossicles are too small to transmit sound
C. The cochlear fluid is too viscous
D. The auditory nerve fires too slowly
{ANSWER: A. Transmission is ineffective if the middle ear cavity is enclosed and pressure is
different on both sides of the tympanic membrane}
6. What is NOT a path by which sound can reach the inner ear?
A. Via the ossicular chain
B. Via bone conduction
C. Via the air in the middle ear cavity to the round window
D. Via the Eustachian tube
{ANSWER: D. Via the Eustachian tube}
7. What major function does the middle-ear reflex perform?
A. Amplifies quiet sounds
B. Equalizes middle ear pressure
C. Protects the inner ear from over-stimulation
D. Produces spectral cues
{ANSWER: C. Protects the inner ear from over-stimulation}
Cochlea
8. The scala vestibuli and scala tympani are connected through the helicotrema. Where is the
helicotrema located in the cochlea?
A. At the base
B. At the apex
C. At the oval window
D. At the round window
{ANSWER: B. At the apex}
9. Which structure provides the metabolic energy needed for normal cochlear function?
A. Stereocilia
B. Helicotrema
C. Stria vascularis
D. Basilar membrane
{ANSWER: C. Stria vascularis}
, 10. Why is the cochlear wave called a traveling wave?
A. It travels from the apex to the base
B. It travels from the base to the apex
C. It travels from the outer ear to the brainstem
D. It reflects back and forth in the canal
{ANSWER: B. It travels from the base to the apex}
11. How does the basilar membrane vibrate in a frequency-specific manner?
A. High-frequency sound causes maximum vibration at the base, while low-frequency sound
causes maximum vibration at the apex
B. High-frequency sound causes maximum vibration at the apex, while low-frequency sound
causes maximum vibration at the base
C. All frequencies vibrate the whole membrane equally
D. Only low frequencies vibrate the membrane
{ANSWER: A}
12. At the characteristic frequency, how does the slope of the input-output function change as
the input level increases?
A. Increases
B. Decreases
C. Stays the same
D. Reverses direction
{ANSWER: B. Decreases}
13. A cross-section of the cochlea is like a tube divided into 3 sections. What are they, from
bottom to top?
A. Scala tympani, scala media, scala vestibuli
B. Scala vestibuli, scala media, scala tympani
C. Scala media, scala vestibuli, scala tympani
D. Scala vestibuli, scala tympani, scala media
{ANSWER: B. Scala vestibuli, scala media, scala tympani}
14. Which cochlear section contains the sensory cells that transduce vibration into neural
impulses?
A. Scala vestibuli
B. Scala media (contains the sensory and supporting cells)
C. Scala tympani
D. Helicotrema
{ANSWER: B. Scala media}
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With Elaborated 100%
Correct Complete Solutions
Guaranteed Pass First Attempt!! Current Update!!
1. What function does the pinna provide?
A. Equalizes pressure across the tympanic membrane
B. Filters sound so that the spectrum of sound depends on the location of the sound source
C. Converts vibration into neural code
D. Protects the inner ear from over-stimulation
{ANSWER: B. Filters sound so that the spectrum of sound depends on the location of the
sound source}
2. What does the pinna do?
A. Provides cues for sound location
B. Matches impedance between air and fluid
C. Transmits neural code to the brainstem
D. Provides metabolic energy to the cochlea
{ANSWER: A. Provides cues for sound location}
3. What is the approximate frequency range for the peak of the total outer-ear canal
resonance?
A. 200-600 Hz
B. 1000-2000 Hz
C. 2000-6000 Hz
D. 8000-12000 Hz
{ANSWER: C. 2000-6000 Hz}
4. The tympanic membrane moves more in the middle part that is connected to the
manubrium. What is this phenomenon called?
A. Lever action
B. Area difference
C. Standing wave
D. Buckling
{ANSWER: D. Buckling}
,5. The Eustachian tube helps solve what problem?
A. Transmission is ineffective if the middle ear cavity is enclosed and pressure is different on
both sides of the tympanic membrane
B. The ossicles are too small to transmit sound
C. The cochlear fluid is too viscous
D. The auditory nerve fires too slowly
{ANSWER: A. Transmission is ineffective if the middle ear cavity is enclosed and pressure is
different on both sides of the tympanic membrane}
6. What is NOT a path by which sound can reach the inner ear?
A. Via the ossicular chain
B. Via bone conduction
C. Via the air in the middle ear cavity to the round window
D. Via the Eustachian tube
{ANSWER: D. Via the Eustachian tube}
7. What major function does the middle-ear reflex perform?
A. Amplifies quiet sounds
B. Equalizes middle ear pressure
C. Protects the inner ear from over-stimulation
D. Produces spectral cues
{ANSWER: C. Protects the inner ear from over-stimulation}
Cochlea
8. The scala vestibuli and scala tympani are connected through the helicotrema. Where is the
helicotrema located in the cochlea?
A. At the base
B. At the apex
C. At the oval window
D. At the round window
{ANSWER: B. At the apex}
9. Which structure provides the metabolic energy needed for normal cochlear function?
A. Stereocilia
B. Helicotrema
C. Stria vascularis
D. Basilar membrane
{ANSWER: C. Stria vascularis}
, 10. Why is the cochlear wave called a traveling wave?
A. It travels from the apex to the base
B. It travels from the base to the apex
C. It travels from the outer ear to the brainstem
D. It reflects back and forth in the canal
{ANSWER: B. It travels from the base to the apex}
11. How does the basilar membrane vibrate in a frequency-specific manner?
A. High-frequency sound causes maximum vibration at the base, while low-frequency sound
causes maximum vibration at the apex
B. High-frequency sound causes maximum vibration at the apex, while low-frequency sound
causes maximum vibration at the base
C. All frequencies vibrate the whole membrane equally
D. Only low frequencies vibrate the membrane
{ANSWER: A}
12. At the characteristic frequency, how does the slope of the input-output function change as
the input level increases?
A. Increases
B. Decreases
C. Stays the same
D. Reverses direction
{ANSWER: B. Decreases}
13. A cross-section of the cochlea is like a tube divided into 3 sections. What are they, from
bottom to top?
A. Scala tympani, scala media, scala vestibuli
B. Scala vestibuli, scala media, scala tympani
C. Scala media, scala vestibuli, scala tympani
D. Scala vestibuli, scala tympani, scala media
{ANSWER: B. Scala vestibuli, scala media, scala tympani}
14. Which cochlear section contains the sensory cells that transduce vibration into neural
impulses?
A. Scala vestibuli
B. Scala media (contains the sensory and supporting cells)
C. Scala tympani
D. Helicotrema
{ANSWER: B. Scala media}
