Audiology Test 1 Study Guide 100% Correct Answers Verified Latest 2024 Version
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Course
Audiology
Institution
Audiology
Audiology Test 1 Study Guide | 100% Correct
Answers | Verified | Latest 2024 Version
What does an Audiologist do? -
• Prevention of hearing loss (monitoring school/industries programs)
• Identification of hearing loss (screening)
• Evaluations (hearing and balance assessments)
o Balanc...
Audiology Test 1 Study Guide | 100% Correct
Answers | Verified | Latest 2024 Version
What does an Audiologist do? - ✔✔
• Prevention of hearing loss (monitoring school/industries programs)
• Identification of hearing loss (screening)
• Evaluations (hearing and balance assessments)
o Balance = vestibular system (semicircular canals)
• Selecting and dispensing hearing aids
• Habilitation & rehabilitation of H impaired (90% of the job)
o Habilitation is educating/counseling those who are born deaf
o Rehabilitation is educating/counseling those who became deaf
Among older adults, hearing loss is related to... - ✔✔
• Poor health
• Decreased physical activity
• Depression
• Isolation
What are the two most prevalent Audiologist jobs? - ✔✔
• Medical and Dispensing/Rehabilitative Audiologists
o ENT/Physician's office and Private Practice
What are the 5 employment settings for Audiologists? - ✔✔
• Medical
• Education
• Pediatric
• Dispensing/Rehabilitative
,• Industrial
How do we hear? - ✔✔Sound is captured by the pinna, goes down the ear canal, hits the ear drum
(tympanic membrane), sound pressure waves set the ear drum in motion, then the 3 ossicle bones of the
incus, malleus, and stapes moves in the oval window of the inner ear, the fluid in the inner ear then gets
set into motion, and the basilar membrane gets moved and the tectorial membrane is moved the
opposite way, then the hairs send neural impulses to the auditory nerve.
The middle ear is an _____ filled cavity - ✔✔air
What does the Eustachian Tube do? - ✔✔equalizes pressure on both sides of the eardrum
What are the properties/functions of the middle ear? - ✔✔• To transmit sound from the tympanic
membrane to the cochlea
• Impedance matching transformer
o Energy transfer from air filled outer and middle ear space to fluid filled inner ear space
o Provides about a 30dB boost in sound energy to account for the reduction in energy for sound
traveling from an air filled medium to a fluid filled medium
What are the two middle ear muscles? (used for impedance) - ✔✔• The tensor tympani and the
stapedius muscle
o The two muscles contract and the ear drum stiffens which allows for the sound to get reflected off the
eardrum; protects the inner ear!
The cochlea is ________ arranged! - ✔✔tonotopically
-Lower frequencies are located towards the apex and higher tones are located towards the base
-Travelling wave depending on it's frequency will peak on a certain point on the Basilar membrane
The inner ear is ____ filled (cochlear) - ✔✔FLUID
, What is the vestibular labyrinth? - ✔✔• It consists of three semicircular fluid/cell filled canals that
connect to one another and control your sense of balance.
o Semicircular canals
The sensory organ of hearing is the __________, which sits on the ___________ - ✔✔Organ of Corti;
basilar membrane
What is the pathway of sound? - ✔✔• Outer ear, Middle ear, Inner ear, Auditory Nerve (8th cranial
nerve)
• Acoustic energy, mechanical energy, electro-chemical energy, electrical energy
Define air conduction - ✔✔(how we hear sounds normally) sound travels from the outer ear to the
middle ear and into the inner ear
Define bone conduction - ✔✔sound bypasses the outer and middle ear, and stimulates the cochlea in
the inner ear directly
What is Ototoxicity? - ✔✔Hearing loss caused by medications
Sensorineural hearing loss affects _______ frequencies first - ✔✔HIGHER - because the base of the
cochlea is higher frequencies at the base (where sounds enter first)
If the site of lesion is on the Auditory Nerve (8th nerve) or higher on the brainstem structure then the
hearing loss is __________ - ✔✔Retrocochlear
What is non-organic Hearing loss? - ✔✔• When patients pretend they have hearing problems for
financial gain
• Kids just want attention
What is the most common hearing impairment gene? - ✔✔• Connexin 26
• High levels of potassium in the Organ of Corti - communication between cells is disrupted
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