1
How does the middle ear space overcome impedance mismatching?
Area ratio
What degree of HL will a patient have if their threshold is right around 72dB
Severe
What layer in the TM is considered the mucosal layer?
The inner layer
1
Scala Tympani contains:
perilymph
Functions of the outer ear
Localization, Protection, Amplification
What type of Hair cells are considered type I?
Inner hair cells
T/F: The middle ear space is filled with fluid
False
Which ossicle is considered the smallest
Stapes
Meaning of the anatomical term "medial."
toward the midline
What type of fibers make up 90% of the Auditory nerve?
type I
What degree of HL may a patient have with a threshold around 57?
Moderately severe
Which frequencies are represented on the outside of the auditory nerve
High frequencies
Explain Behavioral testing in regard to a Hearing exam
any hearing test that relies on a person’s observable responses to sound, raising a hand, pressing a button
Sensorineural hearing loss indicates a problem with the:
Inner ear/or auditory nerve
Anatomical meaning of "Frontal."
front (anterior) part of the body
The purpose of the eustachian tube
equalize pressure
How can you determine the degree of HL, AC or BC
AC
What is the purpose of the Middle layer in the TM
to give it its rigidity and stiffness that allows it to vibrate
Conductive hearing loss represents a problem with the:
Middle/Outer ear
What part of the brain allows information to cross between sides
The corpus callosum
T/F: The scala media contains perilymph, which has a charge of +80 mV
F, contains endolymph
Type of Hearing loss is determined by
The relationship between Bone conduction and Air conduction
Function of the stria-vascularis
provide blood supply to the cochlea, produce and regulate endolymph
During de-polarization the neuron becomes more positive or more negative
more positive