3.4-3.5

Question 1

interpreted as frequency or pitch (high, medium, or low).

Answer 1

Wavelength

Question 2

interpreted as volume (how soft or loud a sound is).

Answer 2

Amplitude

Question 3

interpreted as timbre (a richness in the tone of the sound).

Answer 3

Purity

Question 4

cycles or waves per second, a measurement of frequency.

Answer 4

Hertz (Hz)

Question 5

short tunnel that runs from the pinna to the eardrum (tympanic membrane).

Answer 5

Auditory canal

Question 6

thin section of skin that tightly covers the opening into the middle part of the ear, just like a drum skin covers the opening in a drum.

Answer 6

Eardrum

Question 7

3 other parts of the ear

Answer 7

hammer, anvil, strirrup

Question 8

snail-shaped structure of the inner ear that is filled with fluid.

Answer 8

Cochlea

Question 9

rests in the basilar membrane; contains receptor cells for sense of hearing.

Answer 9

Organ of Corti

Question 10

bundle of axons from the hair cells in the inner ear; receives neural message from the organ of Corti.

Answer 10

Auditory nerve

Question 11

psychological experience of sound that corresponds to the frequency of the sound waves; higher frequencies are perceived as higher pitches.

Answer 11

Pitch

Question 12

theory of pitch that states that different pitches are experienced by the stimulation of hair cells in different locations in the organ of Corti.

Answer 12

Place Theory

Question 13

theory of pitch that states that pitch is related to the speed of vibrations in the basilar membrane

Answer 13

Frequency Theory

Question 14

theory of pitch that states that frequencies above 100 Hz cause the hair cells (auditory neurons) to fire in a volley pattern, or take turns in firing.

Answer 14

Volley principle

Question 15

two types of hearing impairments

Answer 15

conduction and nerve hearing impairment

Question 16

Conduction hearing impairment - can result from either:

Answer 16

Damaged eardrum or Damage to the bones of the middle ear

Question 17

Nerve hearing impairment - can result from either

Answer 17

Damage in the inner ear, or
Damage in the auditory pathways and cortical areas of the brain.

Question 18

a microphone implanted just behind the ear picks up sound from the surrounding environment.

Answer 18

Cochlear Implant

Question 19

selects and arranges the sound picked up by the microphone.

Answer 19

Speech processor

Question 20

is a transmitter and receiver, converting signals into electrical impulses.

Answer 20

Implant