Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PNS > Final: Ear > Flashcards

Final: Ear Flashcards

1
Q

Ectodermal thickening on lateral “head” called

A

Placode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Auditory tube and tympanic cavity derived from

A

First Pharyngeal pouch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Malleus derived from

A

Dorsal end of ventral mandibular cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Incus derived from

A

Dorsal end of first Pharyngeal arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Stapes derived from

A

Dorsal end of second Pharyngeal arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Tympanic membrane derived from

A

Interstitial mesoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

External acoustic canal derived from

A

First pharyngeal groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Auricle derived from

A

Groove next to first pharyngeal groove

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

3 extrinsic muscles of ear

A

Anterior auricular
Superior auricular
Posterior auricular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Smallest extrinsic ear muscle

A

Anterior auricular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Largest extrinsic muscle of ear

A

Superior auricular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

External acoustic meatus is ___ shaped

A

S

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

____ produce cerumen

A

Modified sweat glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Sympathetic supply to external ear

A

Superior cervical ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Blood supply to external ear

A

Posterior auricular branch
Anterior auricular branch
Auricular branch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Sensory supply to external ear

A

Auriculotemporal N
Auricular branch of vagus
Great auricular N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Motor supply to external ear

A

Temporal and posterior auricular branch of facial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

2 parts of middle ear

A

Tympanic cavity

Epitympanic recess

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

3 bones in middle ear

A

Malleus
Incus
Stapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

2 muscles in tympanic cavity

A

Stapedius

Tensor tympani

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Roof of middle ear

A

Petrous part of temporal bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Floor/ jugular wall of middle ear

A

Internal jugular vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Lateral/membranous wall of middle ear

A

Tympanic membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Posterior/ mastoid wall of middle ear

A

Aditus of mastoid antrum
Pyramidal eminence
Chorda tympani opening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Aditus of mastoid antrum

A

Between tympanic cavity and mastoid air cells

Ear infections can spread- mucous membrane continuous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Pyramidal eminence is opening that tendon of ____ passes through

A

Stapedius muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Carotid/ anterior wall separates cavity from

A

Internal carotid artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Openings in carotid wall

A

Pharyngotympanic tue
Tensor tympani
Chorda tympani

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Labyrinthine/ medial wall of middle ear

A 
Promontory 
Oval window 
Round window
Prominence of facial canal 
Lateral semicircular canal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Promontory is impression made by

A

Cochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Promontory covered by

A

Tympanic plexus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

____ leaves tympanic plexus and travels to ___ ganglion

A

Lesser petrosal nerve

Otic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

___ attaches to oval window

A

Stapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

____ covers internal carotid artery

A

Internal carotid plexus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Largest bone in middle ear

A

Malleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

___ contacts tympanic membrane

A

Malleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Smallest bone in middle ear

A

Stapes

38
Q

Blood supply to middle ear

A

Anterior tympanic branch of IMA

Tympanic branch of ICA

39
Q

sensory supply to middle ear

A

Tympanic N of 9

40
Q

Motor supply to middle ear

A

N to stapedius

Medial pterygoid N

41
Q

Medial pterygoid N supplies

A

Tensor tympani

42
Q

Sympathetic supply to middle ear

A

Caroticotympanic N

43
Q

Caroticotympanic N carry ___ and ___ from ____ by way of internal carotid plexus

A

Vasomotor and secretomotor

Superior cervical ganglion

44
Q

Bony labyrinth is enclosure for

A

Membranous labyrinth

45
Q

Membranous labyrinthe surrounded by

A

Perilymph

46
Q

3 parts of bony labyrinthe

A

Cochlea
Vestibule
Semicircular canals

47
Q

Cochlea contains

A

Cochlear duct

48
Q

Vestibule contains

A

Utricle and saccule

49
Q

Semicircular canals contain

A

Semicircular ducts

50
Q

Membranous labyrinthe contains

A

Endolymph

51
Q

Membranous labyrinthe includes

A

Cochlear labyrinth

Vestibular labyrinth

52
Q

____ drains to endolymphatic sac

A

Endolymphatic duct

53
Q

___ connects saccule with cochlear duct

A

Ductus reuniens

54
Q

Bony part of cochlea consists of tube coiled around cone-shaped central bony structure called

A

Modiolus

55
Q

Apex of cochlea directed

A

Anterolaterally

56
Q

Cochlea made up of 3 channels

A

Cochlear duct
Scala vestibuli
Scala tympani

57
Q

Scale vestibuli and scala tympani communicate with each other at

A

Helicotrema

58
Q

Scala vestibuli is ___ cochlear duct and is filled with ___, and oval window is at the ___

A

Above

Perilymph

Base

59
Q

Scala tympani is ___ cochlear duct and base is at ___

A

Below

Round window

60
Q

Rough order of vibrations in middle ear

A

Stapes —> oval window —> scala vestibuli —>helicotrema —>scala tympani —>round window

61
Q

Cochlear duct filled with

A

Endolymph

62
Q

Cochlear duct attached to lamina at

A

Mediolus

63
Q

Cochlear duct anchored to outer wall of cochlea by

A

Spiral ligament

64
Q

Cochlear duct separated from scala vestibuli by

A

Vestibular membrane

65
Q

Cochlear duct separated from scala tympani by

A

Basilar/ spiral membrane

66
Q

___ located on floor of cochlear duct, attached to basilar membrane

A

Spiral organ

67
Q

Hair-like projections from basilar membrane and are sensitive to

A

Frequency and amplitude of sound waves

68
Q

Hair cells of spiral organ covered by

A

Tectorial membrane

69
Q

Sound waves enter EAM, causing

A

Tympanic membrane to vibrate

70
Q

Ossicles of middle ear transmit vibrations and amplify sound by

A

1.2 times

71
Q

Foot of stapes articulates with ___, causing amplification of another ___

A

Oval window

17 times

72
Q

Largest amplification of sound occurs at

A

Stapes and oval window

73
Q

Vibrations transmitted through perilymph of ___ and ____, eventually reaching round window

A

Scala vestibuli

Scala tympani

74
Q

Waves transmitted through perilymph cause ____ to vibrate stimulated receptors in ____

A

Basilar membrane

Spiral organ

75
Q

Vibrations are eventually transmitted to

A

Cochlear nerve

76
Q

Vestibular labyrinth consists of 2 sacs, ___ and ___, and 3 semicircular ducts

A

Saccule

Utricle

77
Q

Saccule communicates with

A

Cochlear duct

78
Q

Utricle is ___ and communicates with

A

Larger

All 3 semicircular ducts

79
Q

Utricle communicates with saccule via

A

Utricosaccular duct

80
Q

Sense organs in utricle and saccule are hairlike projections called

A

Maculae

81
Q

Maculae are bathed in

A

Endolymph

82
Q

___ float on endolymph, and movements of head cause ___ to deflect maculae

A

Otoliths

Otoliths

83
Q

Utricle detects

A

Centrifugal and linear acceleration in any plane

84
Q

Saccule detects

A

Linear accelerations in vertical and sagittal plane

85
Q

Sense organs in semicircular ducts called __, located in ___

A

Crista

Ampulla of each duct

86
Q

Semicircular ducts sensitive to

A

Accelerations in any direction

Particularly Rotational accelerations

87
Q

Superior branch is ___ and carries info from ____

A

Larger

Anterior, lateral semicircular ducts and utricle and saccule

88
Q

Voit’s Nerve

A

Direct nerve from superior branch to saccule

89
Q

Inferior branch carries info from

A

Posterior semicircular duct and saccule

90
Q

Axons from vestibular ganglion make up vestibular N, which carries info to

A

Medial vestibular N

PNS (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions