SHS 311 Comprehensive Resource To Help You Ace Exams Includes Frequently Tested Questions With Elaborated 100% Correct Complete Solutions Guaranteed Pass First Attempt!! Current Update!!

SHS 311

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. Which part directs sound to the middle ear and amplifies or attenuates sound in a frequency-
specific manner depending on the relative location of the sound source?
A. Outer ear
B. Middle ear
C. Inner ear
D. Auditory nerve
{ANSWER: A. Outer ear}

2. Which part matches the impedance difference between air and the fluids/tissues of the inner
ear, provides direct stimulation of the inner ear, and offers protection?
A. Outer ear
B. Middle ear
C. Inner ear
D. Auditory nerve
{ANSWER: B. Middle ear}

3. Which part performs transduction of sound and vibration into neural code?
A. Outer ear
B. Middle ear
C. Inner ear
D. Auditory nerve
{ANSWER: C. Inner ear}

4. Which part transmits the neural code of sound to the brainstem?
A. Outer ear
B. Middle ear
C. Inner ear
D. Auditory nerve
{ANSWER: D. Auditory nerve}

5. Place these structures in the order sound travels through the peripheral auditory system:

, • Inner ear

• Outer ear

• Auditory nerve

• Middle ear

{ANSWER: 1. Outer ear → 2. Middle ear → 3. Inner ear → 4. Auditory nerve}

6. The 3 ossicles in the middle ear are:
A. Malleus, incus, stapes
B. Malleus, incus, cochlea
C. Incus, stapes, pinna
D. Stapes, manubrium, incus
{ANSWER: A. Malleus, incus, stapes}



7. Which structure produces spectral cues for the vertical location of a sound source?
A. Pinna
B. Tympanic membrane
C. Stapes
D. Eustachian tube
{ANSWER: A. Pinna}

8. The transfer function of the ear canal has a 10 dB gain at 2 kHz. If the input is 40 dB SPL at 2
kHz, the output at 2 kHz is:
A. 30 dB SPL
B. 40 dB SPL
C. 50 dB SPL
D. 400 dB SPL
{ANSWER: C. 40 dB SPL + 10 dB = 50 dB SPL}

9. The ear canal has a 10 dB gain at 2 kHz. If the input is 60 dB SPL at 2 kHz, the output at 2 kHz
is:
A. 50 dB SPL
B. 60 dB SPL
C. 70 dB SPL
D. 600 dB SPL
{ANSWER: C. 70 dB SPL}

, 10. The input plus the reflected wave at a resonant frequency is called a:
A. Standing wave
B. Transfer function
C. Impedance mismatch
D. Spectral cue
{ANSWER: A. Standing wave}

11. Sound speed/(4 × length) gives the:
A. Impedance
B. Resonant frequency
C. Transfer function
D. Gain
{ANSWER: B. Resonant frequency}

12. What is the approximate resonant frequency range of the outer ear canal?
A. 200-400 Hz
B. 1000-2000 Hz
C. 2000-4000 Hz
D. 8000-10000 Hz
{ANSWER: C. 2000-4000 Hz}

13. Using resonant frequency = sound speed/(4 × length), which change would raise the
resonant frequency of a tube?
A. Making the tube longer
B. Making the tube shorter
C. Lowering the sound speed
D. Closing both ends
{ANSWER: B. Making the tube shorter}



14. The primary function of the middle ear is to compensate for ______ so that the auditory
system can be maximally sensitive.
A. Standing waves
B. Impedance difference
C. Resonant frequency
D. Spectral cues
{ANSWER: B. Impedance difference}

15. Which are the 3 ways the middle ear addresses impedance mismatch?
A. Area difference