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CD 443 Exam 1 –Questions With Precise Solutions
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CD 443 Exam 1 –Questions With Precise Solutions
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CD 443 Exam 1 –Questions With Precise Solutions2 to 3 out of every 1,000 children have been born with _____ Right Ans -
detectable hearing loss in one or both ears
About ____ million U.S adults could benefit from hearing aids Right Ans -
28.8 million
Among adults, 70+ who could benefit from hearing aids, <___% have ever used
them Right Ans - 30%
For adults 20-69 who could benefit from hearing aids, _____ have ever used
them Right Ans - 16%
___ out of 6 children experience ear infection by the time they are ____ years
old Right Ans - 5, 3
Medical audiology Right Ans - Mostly diagnostic work to determine where
the disorder is within the auditory system
Dispensing or rehabilitative audiology Right Ans - Focus: Reducing
negative impact of hearing loss
Pediatric Audiology Right Ans - Audiological services focused on newborns,
infants, and children
Educational Audiology Right Ans - Audiological services typically offered in
a school setting for children aged 5-18 years
Industrial Audiology Right Ans - prevention hearing loss in the workplace.
Identifying noise sources, measuring noise levels.. etc
Recreational Audiology Right Ans - Providing hearing conservation to
those who enjoy excessively loud forms of recreation.
Animal audiology Right Ans - evaluating animal hearing, counseling about
dog safety and communication issues, and hearing conservation for service
animals
, Tele-audiology Right Ans - reaching remote areas to patients in need of
audiological services
The outer ear Right Ans - the outermost part of the ear, consisting of the
pinna and the external auditory canal
External auditory meatus Right Ans - An oval, S shaped tube,
* 25-35 mm long and 6-8 mm in diameter
* the lateral (outermost) 1/3 = cartilage
* the medial 2/3rd = bone
* preferred resonant frequency= 3800
The middle ear Right Ans - the chamber between the eardrum and cochlea
containing 3 tiny bones (hammer, anvil, and stirrup) that concentrate the
vibrations of the eardrum on the cochlea's oval window
Typmanic membrane (eardrum) Right Ans - -cone of light
-circular in shape
- thin, resilient membrane
- 3 layers
- thickened outer ring (annulus)
Tympanic cavity Right Ans - contains the ossicles
Superior wall Right Ans - cranium
Inferior wall Right Ans - jugular vein
lateral wall Right Ans - tympanic membrane
medial wall Right Ans - oval and round windows
anterior wall Right Ans - carotid artery
posterior wall Right Ans - mastoid
Ossicles Right Ans - malleus, incus, stapes
muscles of the middle ear Right Ans - tensor tympani and stapedius
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