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