Hearing (unit 3)

Question 1

frequency

Answer 1

number of wave cycles that occur in a second

Question 2

pitch

Answer 2

sounds are described as high or low

Question 3

short wavelength =

Answer 3

high frequency/pitch

Question 4

long wavelength =

Answer 4

low frequency/pitch

Question 5

amplitude

Answer 5

allows us to distinguish between loud and soft sounds

Question 6

small amplitude=

Answer 6

soft sound

Question 7

large amplitude=

Answer 7

loud sound

Question 8

pinna

Answer 8

external flaps of skin or cartilage

Question 9

auditory canal

Answer 9

part of the outer ear that tends to the tympanic membrane

Question 10

eardrum or tympanic membrane

Answer 10

separates outer ear from middle ear that are set in motion by the eardrum

Question 11

ossicles (hammer, stirrup, anvil)

Answer 11

three bones in middle ear that are set in motion by the eardrum

Question 12

oval window

Answer 12

thin membrane leading to inner ear

Question 13

cochlea

Answer 13

coiled tube that contains fluid that vibrates in response to sound and triggers hair cells

Question 14

basilar membrane

Answer 14

thin membrane that hair cells are rooted to

Question 15

hair cells or cilla

Answer 15

triggered by fluid movement and bend causing hair cells to send neural messages to brain

Question 16

place theory

Answer 16

sound perceived based on what place cochlea is stimulated (high pitches)

Question 17

frequency theory

Answer 17

sound perceived because neurons send signal to brain at same freq as sound (low pitches)

Question 18

volley principle

Answer 18

nerves fire one after another

Question 19

parallel processing

Answer 19

intensity and time differences allow you to tell where the sound is coming from

Question 20

conduction

Answer 20

hearing loss caused by damage to mechanical system

Question 21

sensorineural

Answer 21

hearing loss caused by damage to cochleas receptor cells or to auditory nerve