INTRO TO AUDIOLOGY EXAM 1
questions and answers graded A+
5 Main parts of the ear - correct answer ✔✔-Outer Ear
-Middle Ear
-Inner Ear
-Auditory Nerve (CN8)
-Central Auditory Nervous System (CANS)
2 Mechanisms of hearing -how they can be tested/evaluated - correct answer ✔✔Hearing Loss
is determined by which mechanism of hearing the loss occurs in:
Conductive Mechanism: Outer and Middle Ear
Sensorineural Mechanism: Inner Ear, CN8, CANS
Types of hearing loss - correct answer ✔✔conductive
sensorineural
mixed
conductive hearing loss lesion - correct answer ✔✔Lesion in Outer or Middle Ear
1 or more problems, all located in the Conductive Mechanism (Outer Ear and Middle Ear)
Ex. lesion in pinna, EAC, tympanic membrane, middle ear, tympanic cavity, ossicular chain,
eustachian tube.)
sensorineural hearing loss lesion - correct answer ✔✔Lesion in Inner Ear, CN8, or CANS
1 or more problems, all located in the Sensorineural Mechanism (Cochlea, Auditory Nerve,
CANS).
, mixed hearing loss lesion - correct answer ✔✔Lesion at multiple places. Both in conductive and
sensorineural mechanisms.
At least 2 problems, at least 1 in both mechanisms. Ex. noise induced hearing loss affecting hair
cells in cochlea & middle ear infection with fluid filled tympanic cavity.
how does hearing loss occur - correct answer ✔✔occurs when there is a "problem" in how
sound is processed in the auditory pathway. A problem can occur anywhere on the auditory
pathway, and multiple problems can occur in more than one location.
Site of lesion - correct answer ✔✔Hearing loss is named for the site of the lesion. Whatever
mechanism has the lesion, it is called that type of hearing loss. Lesion is the site of the problem.
Patterns of AC/BC measures related to types of hearing loss
conductive - correct answer ✔✔AC shows a hearing problem (lesion), but BC shows no problem
Patterns of AC/BC measures related to types of hearing loss
mixed - correct answer ✔✔AC and BC show hearing loss
Patterns of AC/BC measures related to types of hearing loss
sensorineural - correct answer ✔✔AC and BC are the SAME
Air bone gap - correct answer ✔✔15+ dB or more. (in order for AC and BC to be considered
"different" they must be different by 15 dB or more.
Question: Could hearing be worse by AC than by BC? (or vice versa?) - correct answer ✔✔NO!!
Because AC tests the entire pathway.
questions and answers graded A+
5 Main parts of the ear - correct answer ✔✔-Outer Ear
-Middle Ear
-Inner Ear
-Auditory Nerve (CN8)
-Central Auditory Nervous System (CANS)
2 Mechanisms of hearing -how they can be tested/evaluated - correct answer ✔✔Hearing Loss
is determined by which mechanism of hearing the loss occurs in:
Conductive Mechanism: Outer and Middle Ear
Sensorineural Mechanism: Inner Ear, CN8, CANS
Types of hearing loss - correct answer ✔✔conductive
sensorineural
mixed
conductive hearing loss lesion - correct answer ✔✔Lesion in Outer or Middle Ear
1 or more problems, all located in the Conductive Mechanism (Outer Ear and Middle Ear)
Ex. lesion in pinna, EAC, tympanic membrane, middle ear, tympanic cavity, ossicular chain,
eustachian tube.)
sensorineural hearing loss lesion - correct answer ✔✔Lesion in Inner Ear, CN8, or CANS
1 or more problems, all located in the Sensorineural Mechanism (Cochlea, Auditory Nerve,
CANS).
, mixed hearing loss lesion - correct answer ✔✔Lesion at multiple places. Both in conductive and
sensorineural mechanisms.
At least 2 problems, at least 1 in both mechanisms. Ex. noise induced hearing loss affecting hair
cells in cochlea & middle ear infection with fluid filled tympanic cavity.
how does hearing loss occur - correct answer ✔✔occurs when there is a "problem" in how
sound is processed in the auditory pathway. A problem can occur anywhere on the auditory
pathway, and multiple problems can occur in more than one location.
Site of lesion - correct answer ✔✔Hearing loss is named for the site of the lesion. Whatever
mechanism has the lesion, it is called that type of hearing loss. Lesion is the site of the problem.
Patterns of AC/BC measures related to types of hearing loss
conductive - correct answer ✔✔AC shows a hearing problem (lesion), but BC shows no problem
Patterns of AC/BC measures related to types of hearing loss
mixed - correct answer ✔✔AC and BC show hearing loss
Patterns of AC/BC measures related to types of hearing loss
sensorineural - correct answer ✔✔AC and BC are the SAME
Air bone gap - correct answer ✔✔15+ dB or more. (in order for AC and BC to be considered
"different" they must be different by 15 dB or more.
Question: Could hearing be worse by AC than by BC? (or vice versa?) - correct answer ✔✔NO!!
Because AC tests the entire pathway.
