Lesson 5

Question 1

In a cross section of the cochlea, the minimum number of rows of hair cells you can see is

Answer 1

4

Question 2

The total number of neural fibers or neurons in the human auditory nerve is about

Answer 2

30,000

Question 3

The basilar membrane separates

Answer 3

the scala media and the scala tympani

Question 4

The scala tympani is filled with

Answer 4

perilymph

Question 5

The base of the cochlea

Answer 5

begins at the oval window

Question 6

The fibers of the auditory nerve, at the point of maximum stimulation of the basilar membrane, discharge and recover at a rate of approximately

Answer 6

up to 1Khz identical to the stimulus frequency

Question 7

The cochlea, acting as a frequency analyzer, distributes acoustic stimuli to places along the basilar membranes according to frequency. This forms the basis of a hypothesis called the

Answer 7

place theory

Question 8

Each of the semi-circular canals

Answer 8

Are oriented at 90 degrees to one another, contain perilymph and endolymph, dectect positioning and balance

Question 9

Collections of nerve fibers are called

Answer 9

ganglia and nuclei

Question 10

Afferent fibers

Answer 10

transmit from the cochlea to the brain