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Anatomy Head And Neck > Ear > Flashcards

Ear Flashcards

1
Q

blue arrow

A

bony ear canal

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2
Q

blue arrow

A

vertical macula in the saccule

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3
Q

the facial nerve exits the middle ear through the:

A

stylomastoid foramen (red arrow)

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4
Q

Which cranial nerves provide sensory innervation to the tympanic membrane?

A

mandibular V3, Vagus X = lateral side

glossopharyngeal IX = meidal side

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5
Q

red arrow

A

greater petrosal nerve

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6
Q

hair cells are specialized sensory cellls that:

A

alter the rate they stimulate an associate sensory nerve in response to bending of hair-like projections

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7
Q

blue arrow

A

round window

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8
Q

light blue arrow

A

tympanic plexus

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9
Q

red arrow (function?)

A

vestibular branch of the vestibulocochlear nerve (CN VIII) balance

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10
Q

the cochlea is innervated by

A

the cochlear brans of CN VIII (vestibulocochlear)

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11
Q

blue bracket

A

vestibule

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12
Q

the pharyngotympanic tube is a passage for _______ between the _____ and _______

A

air

pharynx

tympanic cavity

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13
Q

blue arrow

A

round window

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14
Q

green arrow (passing through?)

A

facial nerve, internal acoustic meatus

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15
Q

which organ of the ear is respibsle for balance

A

vestibule (blue bracket)

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16
Q

blue arrow

A

malleus

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17
Q

red arrow

A

umbo of the tympanic membrane (tip of the malleus on the other side)

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18
Q

chorda tympani exits the middle ear and joins with which nerve?

A

lingual nerve (blue arrow)

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19
Q

orange dots sensory innervation

A

facial nerve CN VII

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20
Q

green arrow

A

space between membranous and bony labrynths filled with perilymph

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21
Q

light blue arrow

A

opening of the external acoustic meatus

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22
Q

the middle ear is an air filled space within the _________ portion of the ________ bone

A

petrous and tympanic portions

temporal bone

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23
Q

pink arrow

A

tympanic nerve from CN IX (glossopharyngeal)

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24
Q

the vestibule is innervated by:

A

vestibular branch of CN VIII (vestibulocochlear)

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25
Q

red arrow

A

incus

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26
Q

light blue arrow

A

tensor tympani

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27
Q

red arrow

A

facial nerve

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28
Q

tensor tympani innervation

A

manddibular nerve V3 (stern’s first law)

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29
Q

red arrow

A

jugular foramen (part)

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30
Q

which part of the ear is responsble for hearing sensations

A

inner, middle, and external

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31
Q

the location of the sound wave transfer from perilymph to endolymph in the cochlear duct is dependent on:

A

frequency of the sound. higher frequency - towards the beginning, lower frequency towards the end

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32
Q

two types of balance organs in the vestibule:

A

maculae, cirstae

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33
Q

ossicles of the ear from lateral to medial

A

malleus, incus, stapes

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34
Q

which portion of the ear is responsible for balance sensation

A

inner ear only

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35
Q

temporal bone is comprised of fused portions:

A

squamous, tympanic, petrous

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36
Q

blue arrow

A

geniculate ganglion

sensory (somatic and taste)

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37
Q

tensor tympani function:

A

dampen your own voice

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38
Q

red arrow

A

promontory

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39
Q

an array of progressively shorter projections line up next to the kinocilium on a hair cell is referred to as:

A

stereocilia (blue bracket)

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40
Q

green arrow

A

stapedius muscle

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41
Q

green arrow

A

cartilaginous ear canal

42
Q

green arrow

A

flaccid part of the tympanic membrane

43
Q

cristae function:

A

crests of hair cells stimulated by fluid flow around the semicircular ducts in response to rotation

44
Q

red circle

A

external acoustic meatus

45
Q

green arrow

A

horizontal maculae in utricle

46
Q

red bracket

47
Q

what detects the pull of gravity in the inner ear

A

vertical macula of the saccule

48
Q

in the middle ear, the chorda tympani crosses the tympanic membrane between the _____ and _______

A

malleus(blue arrow) and incus(red arrow)

chroda tympani: (pink arrow)

49
Q

blue area sensory innervation

A

auricular branch of vagus CN X

50
Q

blue arrow (function?)

A

cochlear branch of vestibulocochlear nerve CN VIII (hearing)

51
Q

blue bracket

A

stereocilia

52
Q

the spiral organ is stimulated by sound waves transmitted from the _________ to the __________ of the ________ duct

A

surrounding perilymph, endolymph, cochlear

53
Q

the superior border of the middle ear leads to the:

A

middle cranial fossa

(greater petrosal nerve exits here)

54
Q

the cristae are located in which specific portion of the semicicular ducts

55
Q

red area sensory innervation

A

lesser occipital nerve

56
Q

blue arrow

A

antitragus

57
Q

green arrow (passing through what?)

A

vestibulocochlear nerve CN VIII passing through the internal acoustic meatus

58
Q

The inner ear is a fluid filled space within the ______ portion of the ________ bone

A

petrous, temporal

59
Q

purple area sensory innervation

A

great auricular nerve

60
Q

green arrow

A

zygomatic process of the temporal bone

61
Q

blue arrow

A

tensor veli palatini

62
Q

tensor tympani origin –> insertion

A

small canal superior to pharyngotympanic tube –> body of malleus inferior to chorda tympani

(light blue arrow)

63
Q

red arrow

64
Q

what is the name for the glands that produce ear wax? where are they located?

A

ceruminous glands, external ear (green arrow)

65
Q

blue arrow

A

carotid canal

66
Q

stapedius muscle innervation

A

CN VII facial nerve (green arrow)

67
Q

the tallest single projection out of apex of hair cell is:

A

Kinocilium (green arrow)

68
Q

green area sensory innervation

A

auriculotemporal nerve from CN V3

69
Q

green arrow

A

oval window

70
Q

the inferior border of the middle ear contains:

A

carotid canal and jugular foamen

71
Q

if the otis media is causing a buling of the tympanic membrane, what will be observed? What does it indicated?

A

distorted cone of light from otoscope, unhealthy middle ear cavity

72
Q

the posterior border of the middle ear is made of:

A

mastoid air cells

73
Q

blue arrow

A

chorda tympani

74
Q

pink arrow

A

chorda tympani

75
Q

the vertical macula is located in the

76
Q

blue arrow

A

tense part of the tympanic membrane

77
Q

the aurcile of the ear is made of:

A

cartilage support except for the lobe

78
Q

light blue arrow

A

styloid process of the temporal bone

79
Q

which organ of the ear is responsible for hearing

A

cochlea (red bracket)

80
Q

green arrow

A

oval window (to the stapes)

81
Q

green arrow

A

levator veli palatini

82
Q

the exxternal ear is a part of the ________ bone

83
Q

How is the pharyngotympanic tube opened?

A

levator veli palatini (green) , tensor veli palatini (blue)

84
Q

the horizontal macula is located in the:

85
Q

red arrow

A

external acoustic meatus

86
Q

what is the boundary between the external and middle ear

A

tympanic membrane (pink arrow)

87
Q

green arrows

88
Q

why is it more likely for infectious material from the repiratory or GI tracts to pass into the middle ear cavity resulting in otis media in children than adults?

A

in young children, the pharyngotympanic tube has a more horizontal orientation

89
Q

blue arrow

A

mandibular fossa of the temporal bone

90
Q

how are hair cells arranged in the cochlea

A

one long ribbon that runs the full elngth of the spiral-shaped cochlear duct

91
Q

three parts of the temporal bone

A

squamous, tympanic, petrous

92
Q

pink arrow

A

cone of light on the tympanic membrane reflected from otoscope

93
Q

pharyngotympanic tube function

A

to allow pressure equalization

94
Q

green arrow

A

spiral organ/ organ of corti

95
Q

How is the pharyngotympanic tube closed?

A

cartilage passively closes the tube

96
Q

green arrow

97
Q

purple arrow

A

mastoid process of the temporal bone

98
Q

pink arrow

A

tympanic membrane

99
Q

pink arrow

100
Q

stapedius muscle action

A

dampens vibrations of the stapes in reaction to potentially damaging loud sounds (green arrow)

101
Q

green arrow

A

stylomastoid foramen

102
Q

pink arrow

A

facial nerve

Anatomy Head And Neck (13 decks)

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