The Ear

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created 5 years ago by mmiyakooo
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1

What does the quote, “ Blindness separates a person from things, whereas deafness separates a person from people.” mean?

its explains how hearing to important

2

Who said, “ Blindness separates a person from things, whereas deafness separates a person from people.” ?

Helen Keller

3

What is sound energy?

sound waves

4

amplitude:

measure the height of the wave

5

What kind of units are used in amplitude in hearing?

decible

6

what is dB?

decible

7

if a human experiences 130dB, what can occur?

pain

8

Frequency:

wavelength

9

what is the unit for frequency?

Hertz

10

Hz

Hertz

11

600 Hz sound completes 600 cycles in how many seconds?

1

12

Timbre :

quality

13

What does the quality distinguish?

same pitch and volume

14

Amplitude : Perception of Characteristic

Loudness

15

high amplitude waves are perceived as quite sounds.

False

16

low amplitude waves are perceived as soft sounds.

True

17

Frequency: Perception of Characteristic

Pitch

18

low frequency waves are perceived as low-pitched sounds.

True

19

High-frequency waves are perceived as high- pitched sounds.

True

20

timbre: Perception of characteristic

The distinct quality or uniqueness of a sound. Allows us to distinguish which instrument produced a note

21

Pure tones have multiple frequencies.

False

22

Complex tones are made up of several frequencies.

True

23

Ultrasound are how many Hz

20,000

24

infrasounds are how many hertz

20

25

Tympanic membrane

eardrum

26

Vestibule

involved primarily in balance

27

Semicircular canals

involved primarily in balance

28

Cochlea

involved in hearing

29

What does the auricle do?

collect sound waves

30

the middle ear is filled with?

air

31

the internal ear is filled with?

fluid

32

3 ossicles are:

malleus, incus, stapes

33

the bones of the middle ear does what with the tympanic membrane

vibrate

34

What is the eustachian tube?

passage way of air

35

Eustachian =

pharyngotympanic tube

36

With an increase in altitude, the pressure outside the tympanic membrane < the air pressure inside the middle ear

the tympanic membrane is pushed outward.

37

With a decrease in altitude, ...

Distortion of the tympanic membrane can make sounds seem muffled and stimulate pain.

38

Inner Ear: Contain sensory organs for what?

hearing and balance

39

what are the bony labyrinth in the inner ear?

Vestibule, Semicircular canals, Cochlea

40

what shape is the cochlea ?

  1. shell- a coiled tube
41

Scala vestibule (Vestibular canal)

containing perilymph

42

Scala media (Cochlea duct)

endolymph

43

Scala tympani (Tympanic canal)

containing perilymph

44

Scala vestibule

Vestibular canal

45

Scala media

Cochlea duct

46

Scala tympani

Tympanic canal

47

Within the cochlear duct

the Organ of Corti

48

What is the path of sound?

Sound ----> vibrate tympanic membrane---->Auditory ossicles vibrate--->Pressure is amplified--->press waves created by the stapes pushing through the fluid in slack vestibule----> sounds go through cochlear duct---> vibrating the basilar membrane and deflecting hairs on inner hair cells.

49

After the sound travels to inner ear where does it go?

Medulla

50

After the medulla, the sound travels to the...

inferior colliculi

51

after the inferior colliculi where does the sound travel?

thalamus

52

after the thalamus, sound goes to the...

auditory cortex

53

where is the auditory cortex?

temporal lobe

54

what causes conduction deafness ?

o a buildup of wax in the ear canal

o infections of the middle ear
o a disease know as otosclerosis.

55

who is legally deaf?

when speech sound is less than 82dB or cannot be heard

56

Age-related hearing loss results from a variety of factors

o Poor circulation to the inner ear

o The cumulative effects of a lifetime of exposure to loud noise.

57

senineuronal deafness can be caused by

o Antibiotics can damage hair cells in sensitive individuals.
o Nicotine produces hearing loss by reducing blood supply to the ear.
o For people with cochlear or brainstem damage, implants can restore the

ability to process speech sounds.