T/F the role of the outer hairs is to enhance the sensitivity of the inner hair cells
What is FALSE
100
fold of tissue anterior to the helix marking the entrance to the concha
What is antihelix
100
_____is an energy transducer. It converts acoustic energy into electrochemical energy
What is ear
100
Given the following frequency 50Hz, calculate the period in milliseconds.
What is 1/50=.02
.02 x 1000 = 20 milliseconds!
100
What letters appear at the end of an audiologists name?
What is Au.D., CCC-A
200
The "impedence mismatch" refers to a mismatch between what?
What is air and cochlear fluid
200
flap of epithelium-covered cartilage partially covering the entrance to the EAM
What is tragus
200
what are the two parts of the conductive mechanisms for sound
What is outer ear, middle ear,
200
Given the following period .0000462 calculate the frequency
What is 1/ .0000462=21, 645 Hz
200
How are sound waves affected by changes in amplitude and pitch?
What is amplitude increase=energy increases, displacement increases, loudness increases. pitch increase=wavelength decreases, frequency increases
300
Elastic air molecules are set in motion, reverse direction, and overshoot their resting position because of...
What is inertia
300
Name the 3 bony structures of the Middle Ear
What is vestibule, semicircular canals, cochlea
300
what are the two sensorineural mechanisms for sound
What is inner ear (Sensory), 8th cranial nerve (neural)
300
Given the frequency 450Hz, calculate the period in seconds and milliseconds.
What is 1/450Hz=.002 seconds
.002 x 1000= 2.22 seconds
300
Besides hearing, what other function does the inner ear provide?
What is balance
400
What are otoacousitc emissions and what are they useful for?
what is looks at function of the hair cells in the cochlea and are useful for newborn hearing screenings
400
Name the 2 main functions of the inner ear
What is Transduce mechanical energy from middle ear into a form of energy the brain can understand.
Converts information regarding the body’s position and movement
400
List two landmarks that can be viewed on the eardrum during an otoscopic evaluation
What is cone of light, umbo, malleus
400
Given the following frequency 15, 600Hz calculate the period in milliseconds
What is 1/15,600Hz=.00006
.00006 x 1000 =.06 milliseconds!
400
T/F The Eustacian tube connects the middle ear space to the inner ear
What is FALSE it connects the middle ear space to the nasopharynx
500
If outer hair cells are damaged, why not bypass them and shear the inner hair cells with loud sounds? There is a little problem known as…
What is recruitment
500
When a loud sound enters the ear, the stapedius and tensor tympani contract in order to
What is reduce the intensity of the sound introduced to the cochlea
500
name 4 parts of the outer ear
What is helix, triangular fossa, antihelix, concha, tragus, antitrigus, lobule, external auditroy meatus.
500
Given the following period .010, find the frequency
What is 1/.010= 100Hz
500
Why do we use Pure Tones for? Audiologic Testing? (3 reasons)
What is 1.Easy to produce
2.Consistent results for normative sampling.
3. Can isolate which frequencies are difficult for the individual to perceive