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IHS Distance Learning Questions and Answers Solved
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IHS Distance Learning
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IHS Distance Learningc). rises upward and forward, then descends to the drum - answer The adult ear canal:
a). is usually straight
b). curves like a vertical figure "S"
c). rises upward and forward, then descends to the drum
d). descends downward, then backward toward the drum
c). where the canal narrows to enter the temporal bone - answerThe isthmus is:
a). another name for the aperture
b). located at the second bend of the canal
c). where the canal narrows to enter the temporal bone
d). the area between the first and second bend
d). all of the above - answerThe pinna and the external canal together:
a). gather and reinforce acoustical signals
b). with the irregular shape of the auricle, cause increases and decreases at different
frequencies
c). forms a resonating sound
d). all of the above
b). 2700 Hz - answerThe average resonant frequency of the ear canal plus concha is:
a). 1500 Hz
b). 2700 Hz
c). 3500 Hz
d). 1000 Hz
d). tympanic membrane - answerThe dividing line between the external ear and the
middle ear is the:
a). malleus
b). Eustachian tube
c). oval window
d). tympanic membrane
a). cilia, ceruminous glands, sebaceous glands - answerThe ear canal contains:
a). cilia, ceruminous glands, sebaceous glands
b). ceruminous glands, pinna, scaphoid fossa
c). umbo, isthmus, sebaceous glands
d). crus, aperture, sebaceous glands
b). along the bottom of the ear canal - answerThe Vagus Nerve (Xth Cranial) is found:
,a). along the bottom of the tympanic membrane
b). along the bottom of the ear canal
c). along the bottom of the intertragal notch
d). at the top of the isthmus
b). crus - answerWhich of the following terms is not part of the tympanic membrane?
a). pars tensa
b). crus
c). pars flaccida
d). umbo
d). a view of the pearly white tympanic membrane - answerAn otoscopic inspection
should reveal:
a). an external auditory canal sloping upward and backward
b). no vision of any ossicles
c). a clear view of the Vagus Nerve (Xth Cranial)
d). a view of the pearly white tympanic membrane
d). all of the above - answerWhich of the following is a part of the pinna?
a). tragus
b). intertragal notch
c). triangular fossa
d). all of the above
c). a closure of the external auditory canal - answerAtresia refers to:
a). an active, draining ear
b). a swollen and itching condition of the external ear canal
c). a closure of the external auditory canal
d). impacted wax
d). all of the above - answerPerforation of the eardrum can be caused by:
a). an infection
b). a fracture of the temporal bone
c). a nearby explosion
d). all of the above
d). all of the above - answerThe following are types of hearing loss:
a). conductive
b). central
c). sensorineural
d). all of the above
d). (a) and (b) above - answerConductive losses may be caused by:
a). a prolapsed canal
b). impacted cerumen
c). damaged hair cells
,d). (a) and (b) above
c). myringoplasty - answerWhich surgical technique repairs the tympanic membrane?
a). cholesteaplasty
b). lobectomy
c). myringoplasty
d). tympanosclerosis
a). a pouch of skin filled with epithelial debris - answerA cholesteatoma can be
described as:
a). a pouch of skin filled with epithelial debris
b). an excess of dry, brown cerumen
c). an inflammation of the walls of the ear canal
d). none of the above
b). refer the patient to a physician - answerWhen an excess of cerumen or a blockage
of cerumen is detected, the hearing aid specialist should:
a). proceed with ear impression
b). refer the patient to a physician
c). proceed with routine testing procedures
d). remove cerumen with a Q-tip
d). all of the above - answerA swollen ear may be caused by:
a). eczema
b). otitis externa
c). dermatitis
d). all of the above
c). calcium deposits - answerTympanosclerosis may be described as:
a). external perforation
b). monomeric spots
c). calcium deposits
d). an odorous epithelial sac
c). conductive loss - answerA tympanic membrane perforation may cause a:
a). mixed loss
b). sensorineural loss
c). conductive loss
d). central loss
c). 27 dB - answerTheoretically, the increase in sound pressure provided by the middle
ear structure is about:
a). 12 dB
b). 15 dB
c). 27 dB
d). none of the above
, b). oval window - answerThe footplate of the stapes fits into the:
a). incus
b). oval window
c). round window
d). incudostapedial junction
d). normal pressure and compliance - answerA type 'A' tympanogram would indicate:
a). possible ossicular discontinuity
b). chronic otitis media
c). mandatory referral
d). normal pressure and compliance
a). the transfer function or aerial ratio - answerThe difference in area size between the
tympanic membrane and the footplate of the stapes increasing the sound pressure at
the footplate is:
a). the transfer function or aerial ratio
b). hydraulic energy
c). impedance
d). static compliance
c). annular ligament, malleus, stapes and tensor tympani - answerThe middle ear cavity
contains:
a). anvil, stapes and cartilage
b). stapedius, incus, eustachian tube and isthmus
c). annular ligament, malleus, stapes and tensor tympani
d). incudostapedial junction, vagus nerve, stapedius and malleus
a). an impedance matching transformer - answerThe middle ear system is often referred
to as:
a). an impedance matching transformer
b). attenuation method
c). stapedial acoustic reflex
d). fundamental transformer
b). acoustic energy to mechanical energy to hydraulic energy - answerThe middle ear
cavity, as a transducer, changes energy from one form to another. The energy change
is from:
a). mechanical energy to acoustic energy
b). acoustic energy to mechanical energy to hydraulic energy
c). acoustic energy to electrical energy to hydraulic energy
d). mechanical energy to hydraulic energy to electrical energy
a). an acoustic reflex - answerThe middle ear muscles contract, resulting in:
a). an acoustic reflex
b). ossicular discontinuity
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