IHS Textbook Chapter 8 Review Questions and Correct Answers
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Course
IHS
Institution
IHS
What test is to measure middle ear function and asses the integrity of the middle ear muscle reflex immittance audiometry
This test assess middle ear function tympanometry
The MEMR (middle ear muscle reflex) pathway is assessed with threshold and decay measurements
Immittance is an objective tes...
IHS Textbook Chapter 8 Review
Questions and Correct Answers
What test is to measure middle ear function and asses the integrity of the middle ear
muscle reflex ✅immittance audiometry
This test assess middle ear function ✅tympanometry
The MEMR (middle ear muscle reflex) pathway is assessed with ✅threshold and
decay measurements
Immittance is an objective test which means what ✅the patient is not required to
participate
The flow of acoustic energy through the ME system is represented by ✅immittance
What is impedance ✅the opposition of energy flow through the ME system
The ease at which acoustic energy passes through the ME system is also known as
what ✅admittance
The TM, ossicular chain and air filled middle space make up what ✅middle ear (ME)
system
Low impedance/high admittance describes what kind of ME system ✅normal
This is a general term that indicates acoustic impedance/admittance. It represents the
measurement of ME and MEMR functions ✅Otoimmittance
The ease with which energy flows through the ME system, the reciprocal of impedance
✅acoustic admittance
The resistance of energy flow through the ME system, the reciprocal of admittance
✅acoustic impedance
These two words are terms for admittance ✅mobility and compliance
These two terms are used for immittance ✅stiffness and non compliance
The measurement of the ME function in terms of compliance/stiffness as a function of
the external ear canal pressure ✅tympanometry
, The acoustic reflex, also known as the stapedial reflex, the involuntary contraction of the
stapedious muscle to an intense sound ✅middle ear muscle reflex (MEMR)
The lowest intensity of a pure tone that causes the stapedious muscle to contract
✅MEMR threshold
The measurement of the stapedious muscle's ability to maintain a contraction to a pure
tone ✅MEMR decay
The multi-purpose immittance assembly inserted in the ear canal, it uses disposable tips
and provides an air tight seal when inserted properly ✅probe assembly and probe tip
Usually 220 or 226 HZ is used to test adults. The probe tone is delivered into the ear
canal at 85 db SPL ✅probe tone
The abbreviation of a physical unit of pressure called the decapascal.
One dapa equals 10 pascals ✅dapa
This is an abbreviation of a physical unit of pressure called millimeters of water, used in
tympanometry ✅mm H2O
Ml and cc or cm3 ✅mililiters ML, cubic centimeters CC or cm3
A component in the immittance audiometer that measures external ear canal pressure
✅manometer
This tool performs tympanometry and MEMR testing ✅immittance audiometer
Tis part of the immittance audiometer has four ports that lead to, the air pump, a tiny
speaker for the probe tone , a tiny microphone for the pure tonesfor MEMR testing, and
the microphone that measures the sound pressure level ✅the probe assembly
The measurement of middle ear impedance as a function of external ear canal pressure
is called what ✅tympanometry
Acoustic energy is more easily moved through the TM to the Ossicular chain to the
perilymph of the cochlea when? ✅when the pressure in the external ear canal and the
middle air space is equal
Any pressure differential and the TM will stiffen and cause what to happen ✅it will
reflect acoustic energy back into the canal
What is the guiding principle in tympanometry ✅the mechanical function of the middle
ear system is optimal when the pressure on both sides of the TM is equal
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