ACTUAL Exam Questions and CORRECT
Answers
Wave compression - CORRECT ANSWER - air molecules come together
wave rarefaction - CORRECT ANSWER - air molecules are far apart
Period - CORRECT ANSWER - time that elapses during ONE complete cycle
inverse of frequency
=seconds/cycle
frequency - CORRECT ANSWER - number of complete cycles per second
=1/period
Procedure for a hearing test (puretone) - CORRECT ANSWER - air and bone conduction
start at 100 Hz 40 dB
down 10 for every yes and up 5 for every no
Wave interference - CORRECT ANSWER - waves interfere in one of two waves
constructive interference - CORRECT ANSWER - wave 1+2 are added together
destructive interference - CORRECT ANSWER - waves 1 and 2 are subtracted
major systems of the ear - CORRECT ANSWER - peripheral mechanism
central mechanism
,central mechanism - CORRECT ANSWER - brainstem and brain
where both left and right ears are represented
-usually somewhere in the brainstem
peripheral mechanism - CORRECT ANSWER - outer, middle, inner ear and 8th cranial
nerve
where there is only one side represented
ear drum - CORRECT ANSWER - transduces acoustic vibration to mechanical
resonance - CORRECT ANSWER - in ear canal
responsible for auditory wave
auricle - CORRECT ANSWER - pinna
elastic cartilage and skin
reflects sound waves
Helix - CORRECT ANSWER - rim of the auricle
tragus - CORRECT ANSWER - small pointed eminence in the external ear
situated in from of the conchea
antihelix - CORRECT ANSWER - small curved prominence of the ear
Lobule - CORRECT ANSWER - flappy skin hanging from ear
suspend objectes from here
, vestibular system - CORRECT ANSWER - responsible for mappins
oval window - CORRECT ANSWER - anterior inferior quadrant
light reflected
low notes in basilar membrane - CORRECT ANSWER - apex 20Hz 500 Hz
high lotes on basilar membrane - CORRECT ANSWER - base
1500-20000 Hz
base of besilar membrane - CORRECT ANSWER - narrow and stiff
closer to stapes
apex of basilar membrane - CORRECT ANSWER - wider and more flexible
helicotrema end
scala vestibuli - CORRECT ANSWER - perilymph
oval window
scala media - CORRECT ANSWER - delicate structures- cochlea middle
tectoral membrane
endolymph
scala tympani - CORRECT ANSWER - round window
perilymph
hyperacousic - CORRECT ANSWER - hyper sensitive to noise