Audiology Praxis 5343 Exam Questions And Answers 100% Pass
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Course
Praxis 5343
Institution
Praxis 5343
mismatch & Protects from loud sounds (also, Eustachian tube equalizes
pressure BC for the TM to vibrate, the air pressure needs to be equal on each side of the TM.)
INNER: amplify sounds, frequency selectivity, converts sound to electrical signal, maintain balance
Function of outer and inner hai...
Audiology Praxis 5343 Exam Questions And
Answers 100% Pass
What is the relationship between fundamental frequencies and harmonics? - answer✔F0= lowest freq
component of a complex periodic sound; harmonic is a regular and repeating multiple of the f0
In which frequencies and at what intensities are most speech sounds produced? - answer✔When
applied to speech, the human voice spans a range from about 125Hz to 8kHz. 55-65 dB
Define threshold - answer✔"Threshold is defined as the lowest decibel hearing level at which responses
occur in at least one half of a series of ascending trials. The minimum number of responses needed to
determine the threshold of hearing is two responses out of three presentations at a single level ."
What is the relationship between sound pressure level (SPL) and hearing level (HL)? - answer✔dB HL
normalizes SPL scale to 0 because we do not hear the same at all frequencies. Our ears do not perceive
low- and high-frequency sounds as well as they do sounds between 500 and 4,000 Hz. Thus, normal
hearing, if plotted on an audiogram using the SPL scale, would be a curved, wavy line.
Describe the function of each of the three major parts of the hearing mechanism - answer✔OUTER:
Pinna-- Funneling of sound & localization. Ear canal-- Amplifies sounds & protects TM
MIDDLE: Reduces impedance mismatch & Protects from loud sounds (also, Eustachian tube equalizes
pressure BC for the TM to vibrate, the air pressure needs to be equal on each side of the TM.)
INNER: amplify sounds, frequency selectivity, converts sound to electrical signal, maintain balance
Function of outer and inner hair cells? - answer✔OUTER: Amplification of displacement on the traveling
wave & frequency selectivity (active processes are here)
INNER: Nerve excitation= send signals to auditory nerve
What are the fluids found in the labyrinths of the inner ear? - answer✔Scala vestibuli: Perilymph
What impacts can hearing loss cause for learning in children? - answer✔Delay in speech and language,
reduced academic achievement and vocabulary, lessened literacy skills, social isolation and poor self-
concept, vocational choices
Describe the differences in speech and language development between pre- and post lingually deafened
children. - answer✔pre lingual- deafened before they learn speech
post lingual- deafened after they learn speech (about age 6)-effects are not as severe for post lingually
deafened children; need to implant/amplify immediately for prelingual
What impacts can hearing loss cause for adults (ex: social isolation)? - answer✔fatigue, depression,
social withdraw, impaired memory, reduced quality of life, headaches, increased stress and blood
pressure
What are the etiologies of hearing loss present at birth? - answer✔50% Genetic (syndromic & Non-
syndromic)
25% Environmental
25% Idiopathic
Genetic causes of HL? Non-syndromic and syndromic - answer✔Non-syndromic:
Characteristics of waardenburg syndrome - answer✔pigmentation abnormalities (gray spots in hair or
different color eyes) and wide-set eyes, congenital SNHL, *can be progressive
Characteristics of Branchio-Oto-Renal Syndrome - answer✔Sensorineural, conductive, or mixed & can be
progressive or permanent at birth. Can cause ossicular fixation or cochear hypoplasia. Kidney
abnormalities!
Characteristics of CHARGE syndrome - answer✔Colomba of the eyes
Heart defects
Atresia or stenosis of the Chonae (nasal passage)
Retardation of growth/development
Genital abnormalities
Ear abnormalities/deafness
Stable, mixed severe-profound unilateral loss
Characteristics of Treacher Collins Syndrome? - answer✔Wonder movie. No cognitive delays! Poor
speech articulation. Moderate-severe CONDUCTIVE loss onlt (anotia/microtia, atresia)
Characteristics of Usher's Syndrome - answer✔SNHL. Vision loss!! Type I in particular causes problems
with VESTIBULAR system. Development & motor skills slow.
Characteristics of Jervell and Lange-Nielson Syndrome - answer✔SNHL and heart condition. Classic
patient presentation: deaf child who experiences fainting episodes during stress, exercise, or fright. Can
also have VESTIBULAR dysfunction.
Alport syndrome characteristics - answer✔Progressive loss of kidney function, SNHL, and eye
abnormalities. Progressive SNHL (at first affects high frequencies). Usually occurs in LATE childhood
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