IHS - FOR LICENSE PREP EXAM
2025/2026 QUESTIONS AND ANSWERS
100% PASS
The adult ear canal: - ANS Rises upward and forward then descends to the drum
The isthmus is: - ANS Where the canal narrows to enter the temporal bone
The pinna and the external canal together: - ANS -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: - ANS 2700 Hz.
The dividing line between the external ear and the middle ear is the: - ANS Tympanic
membrane.
The ear canal contains: - ANS Cilia, ceruminous glands. sebaceous glands.
The vagus nerve (Xth cranial) is found: - ANS Along the bottom of the ear canal.
These are parts of the tympanic membrane: - ANS Pars tensa, Pars flaccida, Umbo.
1 @COPYRIGHT 2025/2026
,An otoscopic inspection should reveal: - ANS A clear view of the white tympanic membrane.
These are parts of the pinna: - ANS Tragus, intertragal notch, triangular fossa.
Atresia refers to: - ANS A closure of the external auditory canal.
Perforation of the eardrum can be caused by: - ANS -An infection
-A fracture of the temporal bone
-A nearby explosion.
These are types of hearing loss: - ANS -Conductive
-Central
-Sensorineural
Conductive losses may be caused by: - ANS A prolapsed canal
Impacted cerumen
Which surgical technique repairs the tympanic membrane? - ANS Myringoplasty
A cholesteatoma can be described as: - ANS 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: - ANS Refer the patient to a physician.
A swollen ear may be caused by: - ANS -Eczema
-Otitis externa
-Dermatitis
2 @COPYRIGHT 2025/2026
, Tympanosclerosis may be described as: - ANS Calcium deposits.
A tympanic membrane perforation may cause a: - ANS Conductive loss.
Theoretically, the increase in sound pressure provided by the middle ear structure is about: -
ANS 27 dB.
The footplate of the stapes fits into the: - ANS Oval window.
A type "A" tympanogram would indicate: - ANS 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 : - ANS The transfer function or aerial ratio.
The middle ear cavity contains: - ANS Annular ligaments, malleus, stapes and tensor tympani.
The middle ear system is often referred to as: - ANS An impedance matching transformer.
The middle ear cavity, as a transducer changes energy from one form to another. The energy
changes from: - ANS Acoustic energy to mechanical energy to hydraulic energy.
The middle ear muscles contract, resulting in: - ANS An acoustic reflex.
The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the: -
ANS Nasopharynx.
The Eustachian tube of a child is: - ANS Straight, short, horizontal.
3 @COPYRIGHT 2025/2026
2025/2026 QUESTIONS AND ANSWERS
100% PASS
The adult ear canal: - ANS Rises upward and forward then descends to the drum
The isthmus is: - ANS Where the canal narrows to enter the temporal bone
The pinna and the external canal together: - ANS -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: - ANS 2700 Hz.
The dividing line between the external ear and the middle ear is the: - ANS Tympanic
membrane.
The ear canal contains: - ANS Cilia, ceruminous glands. sebaceous glands.
The vagus nerve (Xth cranial) is found: - ANS Along the bottom of the ear canal.
These are parts of the tympanic membrane: - ANS Pars tensa, Pars flaccida, Umbo.
1 @COPYRIGHT 2025/2026
,An otoscopic inspection should reveal: - ANS A clear view of the white tympanic membrane.
These are parts of the pinna: - ANS Tragus, intertragal notch, triangular fossa.
Atresia refers to: - ANS A closure of the external auditory canal.
Perforation of the eardrum can be caused by: - ANS -An infection
-A fracture of the temporal bone
-A nearby explosion.
These are types of hearing loss: - ANS -Conductive
-Central
-Sensorineural
Conductive losses may be caused by: - ANS A prolapsed canal
Impacted cerumen
Which surgical technique repairs the tympanic membrane? - ANS Myringoplasty
A cholesteatoma can be described as: - ANS 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: - ANS Refer the patient to a physician.
A swollen ear may be caused by: - ANS -Eczema
-Otitis externa
-Dermatitis
2 @COPYRIGHT 2025/2026
, Tympanosclerosis may be described as: - ANS Calcium deposits.
A tympanic membrane perforation may cause a: - ANS Conductive loss.
Theoretically, the increase in sound pressure provided by the middle ear structure is about: -
ANS 27 dB.
The footplate of the stapes fits into the: - ANS Oval window.
A type "A" tympanogram would indicate: - ANS 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 : - ANS The transfer function or aerial ratio.
The middle ear cavity contains: - ANS Annular ligaments, malleus, stapes and tensor tympani.
The middle ear system is often referred to as: - ANS An impedance matching transformer.
The middle ear cavity, as a transducer changes energy from one form to another. The energy
changes from: - ANS Acoustic energy to mechanical energy to hydraulic energy.
The middle ear muscles contract, resulting in: - ANS An acoustic reflex.
The Eustachian tube begins in the lower portion of the tympanic cavity and ends at the: -
ANS Nasopharynx.
The Eustachian tube of a child is: - ANS Straight, short, horizontal.
3 @COPYRIGHT 2025/2026
