Exam 2 Flashcards
(84 cards)
A term used as an all-encompassing term to describe measurements made of TM impedance, compliance or admittance
Acoustic immittance
the total opposition to the flow of acoustic energy (in the plane of the TM)
Acoustic impedance
3 measurements at the plane of the TM
Static Acoustic Compliance/Admittance
Tympanometry
Acoustic Reflex
measurement of the contraction of the middle ear muscle (stapedius muscle) in response to intense sounds
Stiffens the middle-ear system by contracting and decreases its static acoustic compliance
Acoustic Reflex
the mobility of the TM in response to a given value of air pressure in the external ear canal
Essentially measuring the mobility of the TM
Static Acoustic Compliance/Admittance
a measurement of middle-ear pressure, determined by the mobility of the TM as a function of positive/negative pressure in the external ear canal
The more positive/negative the pressure is, the less mobile the middle-ear becomes
Tympanometry
Mass is important for what frequencies?
A) high
B) low
A) high
Stiffness is important for what frequencies?
A) Low
B) High
A) low
As stiffness increases, compliance _______?
A) increases
B) decrease
C) stays the same
B) Decreases
As frequency increases the total value of mass ____?
A) Also increases
B) decreases
C) Stays the same
A) Also increases
(opposition to a force) is determined primarily by the ligaments that support the ossicles
Resistance
What is determined primarily by the weight of these 3 tiny bones and the TM
Mass factor
What is primarily determined by the load of fluid pressure from the inner ear on the base of the stapes
Stiffness
The ear is a largely ______-dominated system, at least for the low frequency response
A) Stiffness
B) Mass
C)Both
A) Stiffness
In Pure-Tone Testing
Conductive losses usually have the greatest effect on the _____ frequencies in the initial and medial stages.
Middle ear pathology stiffens the middle-ear system (______ compliance)
Stiffness is lessened as the frequency _______ (gets higher)
Results are still dependent on a full battery of testing, but this is a general notion
A) Lower, Decreases, Increases
B)Lower, Increase, decrease
C) Higher, Decrease, Increase
A) Lower, Decreases, Increases
What are the primary components of an electroacoustic immittance meter: A) Speaker B)Microphone C)Air pressure pump D) A & B E) A, B & C
E) A, B & C
An occlusion in the Ear Canal can?
A) can alter test results
B)not effect the testing
A) Alter the test results
When the probe tip is pressed in the ear canal you need a ____ seal then ______ pressure is ____ with the air pump
A) tight, positive, and increased
B) tight, negative, and increased
C) tight, positive, and decreased
A) tight positive and increase
The ECV represents the compliance of the?
A) middle ear
B) outer ear
C) inner ear
B) outer ear
Static acoustic compliance represents?
A) outer and inner ear
B) middle and inner ear
C) Outer and middle ear
C) outer and middle ear
Research does agree on a set values that constitute normal static acoustic compliance
True or False
False
Research does not agree on a set values that constitute normal static acoustic compliance
Differences do not exist between adults and children and between the various probe tone frequencies
True or False
False
Differences exist between adults and children and between the various probe tone frequencies
Values cannot be considered abnormal unless one of the extremes is clearly exceeded
True or False
True
Even normal middle ears values vary with age and gender
True or False
True
