Cada pregunta de este test está cronometrada.
Auricle:
The eardrum, receives sound vibrations from the outer air and then transmitted to the middle ear
Collects and guides sound waves to the tympanic membrane
Receives sound waves from tympanic membrane and amplifies and transports vibrations
Used to sense lower frequency sounds and transmits sounds to the brain, transfers waves to electrical impulses
Malleus, Incus, and Stapes:
Works like a valve to regulate pressure in the ear
Receives sounds waves from tympanic membrane and amplifies and transports vibrations
Regulates pressure in the ear and equalizes it with pressure outside the body
Receives vibrations from stapes and transfers energy to fluid waves in the inner ear
Tympanic Membrane:
Connects the cochlea with the brain and sends sound signals to the brain
Semicircular Canals:
Arc shaped tubes that help the body maintain balance and regulate balance by fluids in there
Cochlea:
Used to transmit sound to the brain, transfers waves to electrical impulses
Auditory Nerves:
An entry way for sounds, amplifies, resonates, and localizes sound
Oval Window:
Round Window:
Eustachian Tube:
Permits equalization of air pressure between the inner ear and the outside air
Connects the inner ear with the throat
Is normally open and closes when we swallow or yawn
Connects the middle ear with the nasopharynx
Ear Canal:
Which of these ARE three main types of hearing loss?
Mixed
Unilateral
Fixed
Conductive
Middle-Ear
Tympanic
Sensorineural
Select FIVE different configurations/shapes of hearing loss...
Symmetrical
Irreversible
Progressive
Fluctuating
Permanent
Asymmetrical
Bilateral
What is the interaural attenuation for air conduction with the TDH headphones?
40 dB
50 dB
55 dB
60 dB
None of the above
What is the interaural attenuation for bone conduction?
10 dB
5 dB
15 dB
0 dB
At what sensation level do you add to the threshold of the NTE for your starting masking level when masking for air conduction?
25 dB SL
30 dB SL
20 dB SL
10 dB SL
Recruitment is the sensitivity to sound that anyone can suffer from.
There are actually 4 different categories or types of presbycusis.
What are the 4 different means of conducting sound to the brain?
Acoustic, mechanical, air, chemical
Air, hydraulic, chemical, electrical
Vibration, fluid, chemical, electrical
Acoustic, mechanical, hydraulic, electrical
25. The speech audiometric test which tells how loud speech must be before the patient can repeat 50% of the words is?
UCL
MCL
SRT
DR
TD
Spondees are utilized for establishing?
Word recognition
Pure-tone threshold
Hearing aid response requirements
Threshold of connected discourse
Which of the following tests would you NOT want to familiarize the subject with the test words?
SDT
The relationship that should exist between the pure-tone average and SRT is?
SRT should be less than the pure-tone average
SRT should be equal to the pure-tone average
SRT should be greater than the pure-tone average
No relationship exists
Not sufficient enough information
If testing was performed at 25dB above threshold, this would be recorded as?
25 dB SPL
25 dB MCL
25 dB HL
25 dB
Which of the following audiometric measures is routinely expressed in dB SPL?
Pure-tone thresholds
Dynamic range
If a person has a dynamic range of 50 dB, and SRT of 60 dB, and an MCL of 80 dB, what is the threshold of discomfort (UCL or LDL)?
130 dB
140 dB
110 dB
120 dB
The rollover phenomenon:
Occurs at levels greater than PB max
Has a distinct shape
May appear in 8th nerve problems
Is questionable in brainstem problems
All of the above
In speech testing, masking is most likely to be required?
When both ears have essentially the same SRT
If you have masked for air conduction
Whenever there is a difference between the ears.
All the time
Rarely
In the inner ear, the transmitting medium for sound is considered to be?
Air
Bone
Fluid
Solid
The most protruding landmark on the tympanic membrane is the?
Umbo
The anterior and posterior malleolar folds
Anterior process of the malleus
The lateral process of the malleus
The annulus
The epitympanic recess:
Is also call the attic
Is mostly filled by the head of the malleus and much of the incus
Is the retraction of the eardrum caused by lack of pressure
Both a and b
Both b and c
The two basic parts of a sound wave are?
frequency and amplitude
spectra and pitch
period and wave length
compression and rarefaction
loudness and intensity
Approximately how many hair cells are there in the organ of corti?
About 5000 inner hair cells and about 10,000 outer hair cells
About 12,000 inner hair cells and about 20,000 outer hair cells
About 500 inner hair cells and about 1,000 outer hair cells
About 100 inner hair cells and about 100 outer hair cells
About 20,000 inner hair cells and about 1500 outer hair cells
The essential parts of the organs of hearing and balance are situated in:
The mastoid bone
The tympanic bone
The meatal bone
The temporal bone
The cochlear bone
The annular ligament:
Suspends the auditory ossicles within the middle ear cavity
Connects the tympanic membrane to the external auditory meatus walls
Is that ligament which annually develops to age 17-18
Fastens the footplate of the stapes to the bony wall of the oval window
Is responsible for maintaining tension on the tympanic membrane
How many octaves lie between 500 Hz and 8000 Hz?
2
4
6
8
10
The frequency of a pure tone is determined by?
the amplitude of the vibrator
friction acting on the vibrator
the spectrum of the pure tone
the intensity of the pure tone
the number of complete cycles occurring per second
If two tones of the same frequency and intensity are 180 degrees out of phase:
their intensities are additive and resonance occurs
a different tone will be heard
no sound will be heard
their collective intensity will be half the original intensity
the frequency will be halved
When the SPL of a sound is 0, it means that:
there is no sound present
the sound is the softest sound that can be detected
the sound measured has pressure equal to the arbitrary reference level
both (b) and (c)
none of the above
Pitch is to frequency as:
loudness is to frequency
loudness is to intensity
loudness is to wavelength
loudness is to pitch
loudness is to spectrum
Essentials necessary for sound to be created and heard are?
vibrator, medium, listener
vibrator, medium, force
vibrator, force, medium, listener
vibrator, force, listener
The relationship between speech power and speech intelligibility is?
low frequencies have more intelligibility, but less power
low frequencies have less intelligibility and less power
high frequencies have more intelligibility and more power
high frequencies have less intelligibility and less power
high frequencies have more intelligibility, but less power
The frequency limits of the audible area of man range from:
1 to 10,000 Hz
125 to 8000 Hz
250 to 8000 Hz
20 to 20,000 Hz
300 to 3000 Hz
Select the approximate dB intensity decrease as the distance from a sound source is doubled:
3 dB
2 dB
12 dB
6 dB
4 dB
If the 4th harmonic in an auditory stimulus is 1600 Hz, the fundamental frequency of that stimulus is?
800 Hz
400 Hz
200 Hz
6400 Hz
3200 Hz
The fundamental frequency is the:
Psychological response to a pure tone
Lowest frequency component of a complex tone
Most commonly occurring frequency in a noise stimulus
Frequency that is basic to all tones
Most speech intelligibility is contained in which of the following frequency regions?
62 – 500 Hz
500 – 1000 Hz
1000 – 2000 Hz
1000 – 8000 Hz
It is equal in each of the examples
Select the correct disorder/condition based on the photo:
Cerumen
Exotosis
Perforation
Otosclerosis
Cholesteatoma
Foreign Body
Tympanosclerosis
Prolapsed Canal
Otitis Media
Otitis Externa