Journey to the Sound of the Brain

Question 1

trumpet makes ___ waves in the air

Answer 1

sound

Question 2

what kind of mechanical wave is sound waves

Answer 2

longitudinal

Question 3

part of the ear that catches sound waves

Answer 3

outer ear

Question 4

after the outer ear has catched the waves, it travels through a narrow passageway called

Answer 4

ear canal

Question 5

end of the ear canal there is an

Answer 5

eardrum

Question 6

membrane roughly half size of a dime

Answer 6

ear drum

Question 7

ear drum is roughly half the size of a ___

Answer 7

dime

Question 8

sound waves make the eardrum ___

Answer 8

vibrate

Question 9

the eardrum vibrates three tiny bones called

Answer 9

malleus
incus
stapes

Question 10

bones that amplify, increase the sound vibrations

Answer 10

malleus
incus
stapes

Question 11

shaped like a snail and the size of a garden pea

Answer 11

cochlea

Question 12

shape of cochlea

Answer 12

snail

Question 13

size of cochlea

Answer 13

garden pea

Question 14

a spiral-shaped organ in the inner ear that is responsible for hearing

Answer 14

chochlea

Question 15

cochlea is filled with ___ in which the sound vibrations makes this ripple

Answer 15

fluid

Question 16

rippling of fluid creates ___

Answer 16

waves

Question 17

hair-like structures in the cochlea

Answer 17

stereocilia

Question 18

stereocilia sits on top of ___

Answer 18

hair cells

Question 19

stereocilia are grouped together as ___ inside the cochlea

Answer 19

hair cell bundles

Question 20

the hair bundle on top of the hair cell turn the movement of the waves into____

Answer 20

electrical signals

Question 21

as the hair bundles are moved, ___ rush into the top of the hair cells

Answer 21

ions

Question 22

as the hair bundles are moved, ions rush into the top of the hair cells causing the release of the chemicals into the ___ of the hair cells

Answer 22

bottom

Question 23

the chemicals then bind to the ___ nerve cells and create an electrical signal

Answer 23

auditory

Question 24

the chemicals then bind to the auditory nerve cells and create an electrical signal which travels along the ____ nerve

Answer 24

auditory nerve

Question 25

the chemicals then bind to the ___ nerve cells and create an electrical signal which travels along the auditory nerve to the ___

Answer 25

brain

Question 26

diffrent hair cells respond to different ___ of sound

Answer 26

frequencies

Question 27

the hair cells at the ___ of the cochlea detect higher pitched sounds

Answer 27

base

Question 28

the hair cells at the base of the cochlea detect higher pitched sounds such as a __ or __

Answer 28

piccolo flute

Question 29

the hair cells at the ___ of the spiral of cochlea detect progressively lower pitched sounds

Answer 29

toward the top

Question 30

hair cells towars the top of the spiral detects what kind of instrument sound

Answer 30

trumpet trombone

Question 31

top of the spiral of cochlea

Answer 31

apex

Question 32

at the apex of the cochlea, it detects the -____ pitch sound

Answer 32

lowest

Question 33

example of lowest pitch sound instrument

Answer 33

tuba

Question 34

interprets the messages as sounds that we recognize nad understand

Answer 34

brain

Question 35

a small, hammer-shaped bone in the middle ear that plays a key role in hearing

Answer 35

malleus

Question 36

s a small, anvil-shaped bone in the middle ear that transmits sound vibrations from the eardrum to the inner ear:

Answer 36

incus

Question 37

a small stirrup-shaped bone in the middle ear, transmitting vibrations from the incus to the inner ear.

Answer 37

stapes