Ch 12 The Auditory System testbank ?s Flashcards
- A human’s perception of pitch corresponds to the _______ of a sound wave;
perception of loudness corresponds to the _______ of a sound wave.
a. frequency; amplitude
b. amplitude; frequency
c. waveform; amplitude
d. amplitude; phase
e. phase; waveform
Answer: a
Textbook Reference: Sound
Bloom’s Level: 1. Remembering
- For which sound energy would a Fourier transform be most useful in breaking down
the frequency spectrum into its component waves?
a. Wind
b. White noise
c. Running water
d. Rain
e. A duet
Answer: e
Textbook Reference: Sound
Bloom’s Level: 4. Analyzing
- Which of the following would cause conductive hearing loss?
a. Damage to the auditory nerve
b. Genetic predisposition to hair cell damage
c. Ossification of the middle ear bones
d. Frequent exposure to gunfire sounds
e. Attending many loud concerts
Answer: c
Textbook Reference: Sound
Bloom’s Level: 3. Applying
- A father notices that his daughter does not respond to him when she isn’t facing him,
nor does she turn her head toward loud noises. After several appointments with doctors,
the family is informed that the girl has malformed hair cells, but has fully functioning
auditory nerves. What type of hearing loss does this girl have, and what would be the best
treatment option?
a. Conductive hearing loss; traditional hearing aid
b. Conductive hearing loss; cochlear implant
c. Sensorineural hearing loss; traditional hearing aid
d. Sensorineural hearing loss; cochlear implant
e. Sensorineural hearing loss; brainstem implant
Answer: d
Textbook Reference: Sound
Bloom’s Level: 4. Analyzing
- Which frequency would be detected by a 23-year-old female with normal hearing, but
not be heard by a 72-year-old man with normal hearing?
a. 10 Hz
b. 300 Hz
c. 5 kHz
d. 20 kHz
e. 40 kHz
Answer: d
Textbook Reference: The Audible Spectrum
Bloom’s Level: 4. Analyzing
- Where does central processing first occur along the auditory pathway?
a. Tympanic Membrane
b. Cochlear nucleus
c. Concha
d. Superior olivary complex
e. Inferior colliculus
Answer: b
Textbook Reference: A Synopsis of Auditory Function
Bloom’s Level: 2. Understanding
- Which structure is not part of the external ear?
a. Tympanic membrane
b. Concha
c. Pinna
d. Auditory meatus
e. Cochlea
Answer: e
Textbook Reference: The External Ear
Bloom’s Level: 1. Remembering
- Hearing loss in the range of _______ is most detrimental to speech recognition.
a. 20–50 Hz
b. 100–400 Hz
c. 700–900 Hz
d. 2–5 kHz
e. 15–20 kHz
Answer: d
Textbook Reference: The External Ear
Bloom’s Level: 1. Remembering
- What is the main function of the ossicles?
a. Reduce energy transfer to the cochlea from loud noises
b. Reduce pressure in the middle ear
c. Transfer vibrations from the tympanic membrane to the oval window
d. Convert sound vibrations into neural impulses
e. Provide cues for elevation of high frequency sound sources
Answer: c
Textbook Reference: The Middle Ear
Bloom’s Level: 2. Understanding
- The _______ allows _______ to flow between the chambers on either side of the
_______ membrane.
a. round window; helicotrema; basilar
b. perilymph; helicotrema; basilar
c. round window; perilymph; tectorial
d. oval window; helicotrema; tectorial
e. helicotrema; perilymph; basilar
Answer: e
Textbook Reference: The Inner Ear
Bloom’s Level: 2. Understanding
- Why is the flexibility of the round window vital for proper functioning of the
cochlea?
a. It is responsible for the differing flexibility of the basilar membrane.
b. There must be a space for liquid to move after displacement from the oval window
because liquid does not compress.
c. It gives rise to the topographical mapping of frequency in the cochlea, which allows for
the decomposition of sound.
d. The traveling wave in the fluid produces a shearing motion of the hair cells, which
causes a voltage change in the round window.
e. It allows for a traveling wave to reach a point of maximum displacement based on its
frequency.
Answer: b
Textbook Reference: The Inner Ear
Bloom’s Level: 4. Analyzing
- Which structure(s) connect(s) adjacent stereocilia?
a. Tip links
b. Kinocilium
c. Inner hair cells
d. Outer hair cells
e. Microtubules
Answer: a
Textbook Reference: Hair Cells and the Mechanoelectrical Transduction of Sound Waves
Bloom’s Level: 1. Remembering
- A student who is working on a cure hearing loss develops a hair cell MET channel
agonist. Would you expect this drug to be effective? Why?
a. Yes; it would increase the flow of cations into the hair cell.
b. Yes; it would open the MET channel without sound stimuli.
c. Yes; it would induce a second messenger cascade that will hold MET channels open
longer.
d. No; the MET channel can only be altered by mechanical means.
e. No; it would decrease the flow of cations into the hair cell.
Answer: d
Textbook Reference: Hair Cells and the Mechanoelectrical Transduction of Sound Waves
Bloom’s Level: 4. Analyzing
- Which of the following is responsible for the biphasic receptor potential of hair cells?
a. Differing ionic properties between the surrounding perilymph and endolymph
b. Transduction channels that are open at rest
c. Increases in intracellular calcium causing transmitter release
d. Ion-pumping cells in the stria vascularis increasing intracellular potassium stores
e. Gap junctions along the apical and basal surfaces
Answer: b
Textbook Reference: The Ionic Basis of Mechanotransduction in Hair Cells
Bloom’s Level: 2. Understanding
- How does ionic composition of endolymph differ from most extracellular fluids?
a. It is K + -poor and Na + -rich.
b. It is Ca 2+ -poor and Na + -rich.
c. It is K + -rich and Na + -rich.
d. It is Ca 2+ -poor and Na + -poor.
e. It is K + -rich and Na + -poor.
Answer: e
Textbook Reference: The Ionic Basis of Mechanotransduction in Hair Cells
Bloom’s Level: 3. Applying