Questions and CORRECT Answers
30 million - CORRECT ANSWER How many people have hearing loss in the US?
18 million - CORRECT ANSWER How many people under age 65 have hearing loss?
3rd most common chronic disease - CORRECT ANSWER Prevalence of Hearing loss
6 of 1000 infants - CORRECT ANSWER How many infants have hearing loss?
90% of kids get ear infections before age 6 - CORRECT ANSWER How many kids get ear
infections?
2 million - CORRECT ANSWER How many deaf in the US?
50 years ago it was developed to assist WW2 veterans returning from war - CORRECT
ANSWER How did audiology come to be?
visual exam of the external ear or ear canal using a scope - CORRECT ANSWER otoscope
osteoma - CORRECT ANSWER benign tumor growth in ear canal (scuba divers)
Tympanosclerosis - CORRECT ANSWER calcium plaque build up to middle ear
otitis media (chronic) - CORRECT ANSWER Middle ear infection (pressure buildup)
Basal end of cochlea - CORRECT ANSWER wide,flacid, vibrates best at high frequencies
, Apitcal end of cochlea - CORRECT ANSWER thin, stiff, vibrates at low frequencies
Air conduction - CORRECT ANSWER The whole hearing pathway - the entire system of sound
Bone conduction - CORRECT ANSWER the pathway of sound in the inner ear beginning at the
cochlea- vibration of bone
Conductive mechanism - CORRECT ANSWER outer ear + middle ear
Sensorineural mechanism - CORRECT ANSWER cochlea and on (cochlea + auditory nerve)
Process of Bone conduction - CORRECT ANSWER the skull vibrates--> vibration of bone around
cochlea--> creates traveling wave
skull vibrates--> ossicles move and vibrate
Occlusion effect - CORRECT ANSWER when there is an obstruction to the ear, a sound is hear
louder due to an artificial improvement made by bone conduction in order to compensate
Airbone gap - CORRECT ANSWER difference between air conduction and bone conduction
thresholds
Erroneous hearing loss - CORRECT ANSWER "faking" hearing loss
Schwabach Test - CORRECT ANSWER Measures: conductive vs. sensorineural HL
Process: put the TF on the mastoid process- measure how long patient hears vibration vs. examiner
Normal Hearing= both hear the tone same length
Diminished= tone heard less than examiner--> SNHL
Prolonged= tone heard longer than examiner --> Conductive HL