IHS ILE Questions- For License
Prep with answers | Latest version
2024/2025
The adult ear canal: - ANSWER -Rises upward and forward then descends to the drum
The isthmus is: - ANSWER -Where the canal narrows to enter the temporal bone
The pinna and the external canal together: - ANSWER --Gather and reinforce accoustical signals
-With the irregular shape of the auricle, cause increases and decreases at different frequencies as the
sound arrives at the ear.
-Forms a resonating tube.
The average resonant frequency of the ear canal plus concha is: - ANSWER -2700 Hz.
The dividing line between the external ear and the middle ear is the: - ANSWER -Tympanic
membrane.
The ear canal contains: - ANSWER -Cilia, ceruminous glands. sebaceous glands.
The vagus nerve (Xth cranial) is found: - ANSWER -Along the bottom of the ear canal.
These are parts of the tympanic membrane: - ANSWER -Pars tensa, Pars flaccida, Umbo.
An otoscopic inspection should reveal: - ANSWER -A clear view of the white tympanic membrane.
These are parts of the pinna: - ANSWER -Tragus, intertragal notch, triangular fossa.
Atresia refers to: - ANSWER -A closure of the external auditory canal.
Perforation of the eardrum can be caused by: - ANSWER --An infection
-A fracture of the temporal bone
-A nearby explosion.
These are types of hearing loss: - ANSWER --Conductive
-Central
-Sensorineural
Conductive losses may be caused by: - ANSWER -A prolapsed canal
Impacted cerumen
Which surgical technique repairs the tympanic membrane? - ANSWER -Myringoplasty
,A cholesteatoma can be described as: - ANSWER -A pouch of skin filled with epithelial debris.
When an excess of cerumen or a blockage of cerumen is detected, the hearing aid specialist should: -
ANSWER -Refer the patient to a physician.
A swollen ear may be caused by: - ANSWER --Eczema
-Otitis externa
-Dermatitis
Tympanosclerosis may be described as: - ANSWER -Calcium deposits.
A tympanic membrane perforation may cause a: - ANSWER -Conductive loss.
Theoretically, the increase in sound pressure provided by the middle ear structure is about: -
ANSWER -27 dB.
The footplate of the stapes fits into the: - ANSWER -Oval window.
A type "A" tympanogram would indicate: - ANSWER -Normal pressure and compliance.
The difference in area size between the tympanic membrane an the footplate of the stapes
increasing the sound pressure at the footplate is : - ANSWER -The transfer function or aerial ratio.
The middle ear cavity contains: - ANSWER -Annular ligaments, malleus, stapes and tensor tympani.
The middle ear system is often referred to as: - ANSWER -An impedance matching transformer.
The middle ear cavity, as a transducer changes energy from one form to another. The energy changes
from: - ANSWER -Acoustic energy to mechanical energy to hydraulic energy.
The middle ear muscles contract, resulting in: - ANSWER -An acoustic reflex.
The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the: - ANSWER -
Nasopharynx.
The Eustachian tube of a child is: - ANSWER -Straight, short, horizontal.
A cholesteatoma: - ANSWER --Occurs in the middle ear
-May perforate the eardrum
-Is usually accompanied by a constant odorous discharge.
Change in either stiffness or mass occur when the normal middle ear function is altered by disease or
trauma causing: - ANSWER -A feeling of stuffiness or a complaint of hearing in a barrel.
Otosclerosis: - ANSWER -Occurs more often in women than men
Occurs more often in Caucasians than other races
Appears to be inherited
Most dysfunctions of the outer or middle ear cause a: - ANSWER -Conductive loss.
Otitis media may occur with: - ANSWER -Fluid in the middle ear.
A plastic or steel strut replaces the stapes during a: - ANSWER -Stapedectomy.
, Treatment for chronic otitis media may include: - ANSWER --Antibiotics
-Inflation of the Eustachian Tube
-Myringotomy
A radical mastiodectomy incudes removal of: - ANSWER -Ossicular chain, mastoid.
The ossicular chain is supported and suspended by: - ANSWER -Stapedius, tensor tympani and
ligaments.
The ear, due to its physical characteristics, enhances which frequencies? - ANSWER -2,000-5,000 Hz.
In a cross section of the cochlea, the minimum number of rows of hair cells you can see is: - ANSWER
-4
The total number of neural fibers or neurons in the human auditory nerve is about? - ANSWER -
30,000
The basilar membrane separates: - ANSWER -The scala media and the scala tympani
The scala tympani is filled with: - ANSWER -Perilymph
The base of the cochlea: - ANSWER -begins at the oval window
The fibers of the auditory nerve, at the point of maximum stimulation of the basilar membrane,
discharge and recover at a rate of approximately: - ANSWER -Up to 1Khz identical to the stimulus
frequency.
The cochlea, acting as a frequency analyzer, distributes acoustic stimuli to places along the basilar
membranes according to frequency, This forms the basis of a hypothesis called the: - ANSWER -Place
theory.
Each of the semi-circular canals: - ANSWER --Are orinted at 90 degrees to one another.
-Contain perilymph and endolymph.
-Detect positioning and balance.
Collections of nerve fibers are called: - ANSWER -Ganglia and nuclei.
Afferent fibers: - ANSWER -Transmit from cochlea to the brain.
Which of the following is a result of tissue and structure damage? - ANSWER -A threshold shift
Distortion of perception of frequncies
Disturbance of perception of loudness
A sensorineural hearing loss is due to a disorder in the: - ANSWER -Inner ear.
A symptom of recruitment is: - ANSWER -Intolerance for loud sounds.
Malingering is a category of: - ANSWER -Non-organic loss.
Meniere's syndrome consists of: - ANSWER -Tinnitus, vertigo, and hearing loss.
An organic disorder is when there is damage to: - ANSWER --The hearing mechanism
Prep with answers | Latest version
2024/2025
The adult ear canal: - ANSWER -Rises upward and forward then descends to the drum
The isthmus is: - ANSWER -Where the canal narrows to enter the temporal bone
The pinna and the external canal together: - ANSWER --Gather and reinforce accoustical signals
-With the irregular shape of the auricle, cause increases and decreases at different frequencies as the
sound arrives at the ear.
-Forms a resonating tube.
The average resonant frequency of the ear canal plus concha is: - ANSWER -2700 Hz.
The dividing line between the external ear and the middle ear is the: - ANSWER -Tympanic
membrane.
The ear canal contains: - ANSWER -Cilia, ceruminous glands. sebaceous glands.
The vagus nerve (Xth cranial) is found: - ANSWER -Along the bottom of the ear canal.
These are parts of the tympanic membrane: - ANSWER -Pars tensa, Pars flaccida, Umbo.
An otoscopic inspection should reveal: - ANSWER -A clear view of the white tympanic membrane.
These are parts of the pinna: - ANSWER -Tragus, intertragal notch, triangular fossa.
Atresia refers to: - ANSWER -A closure of the external auditory canal.
Perforation of the eardrum can be caused by: - ANSWER --An infection
-A fracture of the temporal bone
-A nearby explosion.
These are types of hearing loss: - ANSWER --Conductive
-Central
-Sensorineural
Conductive losses may be caused by: - ANSWER -A prolapsed canal
Impacted cerumen
Which surgical technique repairs the tympanic membrane? - ANSWER -Myringoplasty
,A cholesteatoma can be described as: - ANSWER -A pouch of skin filled with epithelial debris.
When an excess of cerumen or a blockage of cerumen is detected, the hearing aid specialist should: -
ANSWER -Refer the patient to a physician.
A swollen ear may be caused by: - ANSWER --Eczema
-Otitis externa
-Dermatitis
Tympanosclerosis may be described as: - ANSWER -Calcium deposits.
A tympanic membrane perforation may cause a: - ANSWER -Conductive loss.
Theoretically, the increase in sound pressure provided by the middle ear structure is about: -
ANSWER -27 dB.
The footplate of the stapes fits into the: - ANSWER -Oval window.
A type "A" tympanogram would indicate: - ANSWER -Normal pressure and compliance.
The difference in area size between the tympanic membrane an the footplate of the stapes
increasing the sound pressure at the footplate is : - ANSWER -The transfer function or aerial ratio.
The middle ear cavity contains: - ANSWER -Annular ligaments, malleus, stapes and tensor tympani.
The middle ear system is often referred to as: - ANSWER -An impedance matching transformer.
The middle ear cavity, as a transducer changes energy from one form to another. The energy changes
from: - ANSWER -Acoustic energy to mechanical energy to hydraulic energy.
The middle ear muscles contract, resulting in: - ANSWER -An acoustic reflex.
The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the: - ANSWER -
Nasopharynx.
The Eustachian tube of a child is: - ANSWER -Straight, short, horizontal.
A cholesteatoma: - ANSWER --Occurs in the middle ear
-May perforate the eardrum
-Is usually accompanied by a constant odorous discharge.
Change in either stiffness or mass occur when the normal middle ear function is altered by disease or
trauma causing: - ANSWER -A feeling of stuffiness or a complaint of hearing in a barrel.
Otosclerosis: - ANSWER -Occurs more often in women than men
Occurs more often in Caucasians than other races
Appears to be inherited
Most dysfunctions of the outer or middle ear cause a: - ANSWER -Conductive loss.
Otitis media may occur with: - ANSWER -Fluid in the middle ear.
A plastic or steel strut replaces the stapes during a: - ANSWER -Stapedectomy.
, Treatment for chronic otitis media may include: - ANSWER --Antibiotics
-Inflation of the Eustachian Tube
-Myringotomy
A radical mastiodectomy incudes removal of: - ANSWER -Ossicular chain, mastoid.
The ossicular chain is supported and suspended by: - ANSWER -Stapedius, tensor tympani and
ligaments.
The ear, due to its physical characteristics, enhances which frequencies? - ANSWER -2,000-5,000 Hz.
In a cross section of the cochlea, the minimum number of rows of hair cells you can see is: - ANSWER
-4
The total number of neural fibers or neurons in the human auditory nerve is about? - ANSWER -
30,000
The basilar membrane separates: - ANSWER -The scala media and the scala tympani
The scala tympani is filled with: - ANSWER -Perilymph
The base of the cochlea: - ANSWER -begins at the oval window
The fibers of the auditory nerve, at the point of maximum stimulation of the basilar membrane,
discharge and recover at a rate of approximately: - ANSWER -Up to 1Khz identical to the stimulus
frequency.
The cochlea, acting as a frequency analyzer, distributes acoustic stimuli to places along the basilar
membranes according to frequency, This forms the basis of a hypothesis called the: - ANSWER -Place
theory.
Each of the semi-circular canals: - ANSWER --Are orinted at 90 degrees to one another.
-Contain perilymph and endolymph.
-Detect positioning and balance.
Collections of nerve fibers are called: - ANSWER -Ganglia and nuclei.
Afferent fibers: - ANSWER -Transmit from cochlea to the brain.
Which of the following is a result of tissue and structure damage? - ANSWER -A threshold shift
Distortion of perception of frequncies
Disturbance of perception of loudness
A sensorineural hearing loss is due to a disorder in the: - ANSWER -Inner ear.
A symptom of recruitment is: - ANSWER -Intolerance for loud sounds.
Malingering is a category of: - ANSWER -Non-organic loss.
Meniere's syndrome consists of: - ANSWER -Tinnitus, vertigo, and hearing loss.
An organic disorder is when there is damage to: - ANSWER --The hearing mechanism
