IHS Questions- For License Prep
Verified 100% Correct.
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.
Verified 100% Correct.
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.
