SHS 311 EXAM 2A Questions and Answers.

SHS 311 EXAM 2A Questions and Answers
Question 1
Scala Vestibuli and Scala Tympani are connected through Helicotrema. Where is
Helicotrema located in the cochlear?
Correct Answer
At the apex



Question 2
Why is the cochlear wave called traveling wave?
Correct Answer
It travels from the base to the apex.



Question 3
What is HRTF?
Correct Answer
-It changes between the source and the outer ear
-Describes how torso, head, and pinna changes amplitudes and phases



Question 4
14
Correct Answer
Auditory nerve



Question 5
What are 3 way that sound can reach the inner ear?
Correct Answer
1. Normal middle ear ossicular chain processes
2. Sound pressure waveform directly traveling in air of middle ear
3. Bones of the head vibrate w/ sound pressure waves only intense vibrations




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, Question 6
What are 2 functions of the Middle ear?
Correct Answer
1. Effectively deliver sound vibration to inner ear fluids
2. To help prevent inner ear from being overdriven by strong vibrations



Question 7
12
Correct Answer
Spiral limbus



Question 8
At the characteristic frequency, how does the slope of input-output function change
as the input level increases?
Correct Answer
Decreases



Question 9
What is the envelope of the traveling wave?
Correct Answer
Estimate of overall pattern basilar membrane vibration over a fairly long period of
time



Question 10
Where is the inner ear situated? and what is it protected by?
Correct Answer
1. skull
2. Temporal bone




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