Lec 11-3 - Auditory

Question 1

Calcification of the ossicles can result in this amount of hearing loss

Answer 1

60 db

Question 2

These protect the cochlea from damage due to very loud noises

Answer 2

Stapedius, tensor tympani

Question 3

This transduces sound signals into neural signal

Answer 3

Cochlea

Question 4

Middle chamber of cochlea has blank

Answer 4

Endolymph

Question 5

Outer 2 chambers of cochlea have blank

Answer 5

Perilymph

Question 6

Basilar membrane contains the blank

Answer 6

Hair cells

Question 7

Where stapes inserts into cochlea

Answer 7

Oval window

Question 8

Base of basilar membrane detects blank

Answer 8

High frequency

Question 9

Basilar membrane is blank and blank

Answer 9

Narrow, stiff

Question 10

Tectorial membrane and hair cells make up the blank

Answer 10

Organ of corti

Question 11

Number of inner hair cells per cochlea

Answer 11

3500

Question 12

We have more blank hair cells than blank

Answer 12

Outer, inner… About 3 times as many

Question 13

Hair cells with role of discriminating sounds… Not bringing messages to the brain… They also get rid of background noise

Answer 13

Outer

Question 14

Damage to hair cells but not eigth nerve fibers…. Blank can be used to activate the right nerve endings

Answer 14

Cochlear implant

Question 15

Exposure to noise leads to these breaking which leads to temporary hearing loss

Answer 15

Tip links

Question 16

Loss of high frequency hearing with age

Answer 16

Presbycusis

Question 17

Presbycusis is due to a loss of blank

Answer 17

Inner+outer hair cells

Question 18

Sounds produced by healthy ears in response to acoustic stimulation

Answer 18

Otoacoustic emissions

Question 19

A given hair cell will respond to sounds of a range of blank

Answer 19

Frequencies

Question 20

Each hair cell and auditory nerve axon has a blank frequency

Answer 20

Characteristic (frequency it is most sensitive to)

Question 21

Louder sound activates blank hair cells

Answer 21

More

Question 22

Transfer of energy is most efficient in this range

Answer 22

1-4 kHz

Question 23

higher order cells are blank selective compared to those in cochlear nucleus

Answer 23

more

Question 24

2 binaural cues

Answer 24

timing, intensity