IHS Questions- For License Prep Verified 100% Correct.
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Course
IHS
Institution
IHS
IHS Questions- For License Prep Verified 100% Correct.
The adult ear canal:
Rises upward and forward then descends to the drum
The isthmus is:
Where the canal narrows to enter the temporal bone
The pinna and the external canal together:
-Gather and reinforce accoustical signals
-With...
IHS Questions- For License Prep Verified
100% Correct.
The adult ear canal:
Rises upward and forward then descends to the drum
The isthmus is:
Where the canal narrows to enter the temporal bone
The pinna and the external canal together:
-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:
2700 Hz.
The dividing line between the external ear and the middle ear is the:
Tympanic membrane.
The ear canal contains:
Cilia, ceruminous glands. sebaceous glands.
The vagus nerve (Xth cranial) is found:
Along the bottom of the ear canal.
These are parts of the tympanic membrane:
Pars tensa, Pars flaccida, Umbo.
An otoscopic inspection should reveal:
A clear view of the white tympanic membrane.
These are parts of the pinna:
Tragus, intertragal notch, triangular fossa.
Atresia refers to:
A closure of the external auditory canal.
Perforation of the eardrum can be caused by:
-An infection
-A fracture of the temporal bone
-A nearby explosion.
These are types of hearing loss:
,-Conductive
-Central
-Sensorineural
Conductive losses may be caused by:
A prolapsed canal
Impacted cerumen
Which surgical technique repairs the tympanic membrane?
Myringoplasty
A cholesteatoma can be described as:
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:
Refer the patient to a physician.
A swollen ear may be caused by:
-Eczema
-Otitis externa
-Dermatitis
Tympanosclerosis may be described as:
Calcium deposits.
A tympanic membrane perforation may cause a:
Conductive loss.
Theoretically, the increase in sound pressure provided by the middle ear structure is about:
27 dB.
The footplate of the stapes fits into the:
Oval window.
A type "A" tympanogram would indicate:
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 :
The transfer function or aerial ratio.
The middle ear cavity contains:
Annular ligaments, malleus, stapes and tensor tympani.
, The middle ear system is often referred to as:
An impedance matching transformer.
The middle ear cavity, as a transducer changes energy from one form to another. The energy changes
from:
Acoustic energy to mechanical energy to hydraulic energy.
The middle ear muscles contract, resulting in:
An acoustic reflex.
The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the:
Nasopharynx.
The Eustachian tube of a child is:
Straight, short, horizontal.
A cholesteatoma:
-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:
A feeling of stuffiness or a complaint of hearing in a barrel.
Otosclerosis:
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:
Conductive loss.
Otitis media may occur with:
Fluid in the middle ear.
A plastic or steel strut replaces the stapes during a:
Stapedectomy.
Treatment for chronic otitis media may include:
-Antibiotics
-Inflation of the Eustachian Tube
-Myringotomy
A radical mastiodectomy incudes removal of:
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