Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

neuro exam 2 > ear > Flashcards

ear Flashcards

(62 cards)

Start Studying
1
Q

auricle

A

aka pinna

collect air waves and funnel them to EAM

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

cartilages of auricle

A

all elastic
helix
tragus
antihelix

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

depressions of auricle

A

concha

scaphoid fossa

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

lobule of auricle

A

composed of fibroelastic tissue

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

blood auricle

A

post auricular a, v

superficial temporal a,v

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

lymp ear

A

mastoid, parotid nodes -> deep cervical nodes

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

EAM

A

thru tympanic portion temporal bone to tympanic membrane
lat 1/3 cartilaginous
med 2/3 boney

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

EAM histo

A

lined by stratifies squamous epi w/ceruminous glands

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

EAM blood

A

post auricular a, v
superficial temporal a,v
deep auricular a

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

innervation ear

A

great auricular & lesser occipital nn
auriculotemporal V3
VII
X

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

innervation EAM

A

auriculotemporal V3

X

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

lymph EAM

A

deep cervical nodes

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

cartilages of auricle

A

all elastic
helix
tragus
antihelix

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

depressions of auricle

A

concha

scaphoid fossa

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

lobule of auricle

A

composed of fibroelastic tissue

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

blood auricle

A

post auricular a, v

superficial temporal a,v

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

lymp ear

A

mastoid, parotid nodes -> deep cervical nodes

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

EAM

A

thru tympanic portion temporal bone to tympanic membrane
lat 1/3 cartilaginous
med 2/3 boney

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

EAM histo

A

lined by stratifies squamous epi w/ceruminous glands

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

EAM blood

A

post auricular a, v
superficial temporal a,v
deep auricular a

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

EAM devleopment

A

derived from arch 1
meatal plug forms from prolif of epi cells, degenerates by month 7
persistence can cause deafness

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

innervation EAM

A

auriculotemporal V3

X

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

lymph EAM

A

deep cervical nodes

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

tympanic membrane

A

convert sound waves into vibrations of middle ear ossicles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
structure of tympanic membrane
semitransparent, fibroelastic membrane separates external and middle ear covered by epidermis externally, mucus membrane internally directed ant and inf
26
tympanic cavity floor
segment of temporal bone separating middle ear from interal jugular v
27
pars falccida
sup thin walled portion of tympanic membrane
28
pars tensa
inf thick walled portion of tympanic membrane
29
blood tympanic membrane
external- deep auricular br of maxillary | internal- ant tympanic br of maxillary
30
innervation of tympanic membrane
external auriculotemporal V3 & X | internal IX
31
auricle development
derived from mesenchyme of arches 1 & 2 6 auricular hillocks fuse defects common, associated w/chromosomal syndromes
32
EAM devleopment
derived from arch 1 meatal plug forms from prolif of epi cells, degenerates by month 7 persistence can cause deafness
33
tympanic membrane development
external epi from ectoderm of cleft 1 middle CT from mesoderm arch 1 internal epi from endoderm of pouch 1
34
middle ear
contains tympanic cavity a mucous lined space w/in petrous portion of temporal bone and auditory ossicles
35
fnx of middle ear
transfer sound waves from gas to liquid aplification protective response to loud sounds via tensor tympani and stapedius mm
36
stapes
base- contacts oval window
37
tympanic cavity floor
segment of temporal bone separating middle ear from interal jugular v
38
tympanic cavity lat wall
tympanic membrane
39
tympanic cavity med wall
promontory- cochlea oval window round window
40
oval window
opens to vestibule of internal ear | contacted by stapes
41
round window
opens to scala tympani covered w/thin membrane | pressure release
42
tympanic cavity post wall
temporal bone aditus and antrum- entrance to mastoid antrum facial canal- for facial n
43
tympanic cavity ant wall
opeing for pharyngotympaic tube ans semi canal for passage of tensor tympani
44
pharyngotympanic tube
auditory tube mucous membrane lined tube connecting middle ear and nasopharynx balances pressure on each side of tympanic membrane posterolateral 1/3 boney tensor veli palati can open tube (V3)
45
malleus
contacts tympanic membrane creates umbo
46
internal ear
housed w/in petrous portion of temporal bone | contains vestibulocochlear organ
47
stapes
base- contacts oval window
48
stapedius
post wall of tympanic cavity stapes dampens mvmt of ossicles VII SVE
49
tensor tympani
cartilaginous part of pharyngotympanic tube malleus dampens mvmt occiles V3 SVE
50
hyperacusis
excessive hearing due to loss of dampening mm
51
blood supply to middle ear
``` inf tympanic a from ascending pharyngeal ant tympanic a from maxillary post tympanic from stylomastoid sup tympanic from middle meningeal a of pterygoid canal vv to pterygoid plexus ```
52
IX middle ear
IX GVA &GVE-P via tympanic br enters via tympaic canaliculus forms tympanic plexus innervates auditory tube as well lesser petrosal n forms form plexus and leaves via hiatus
53
VII middle ear
SVE to stapedius
54
course of VII
enters IAM to course to middle ear, travels in facia canal, gives off chorda tympani and exits middle ear at stylomastoid foramen
55
course of chorda tympani
passes btwn incus and mallesu and exits middle ear via petrotympanic fissure SVA to ant 2/3s tongue GVE-P to submandibular and sublingual glands
56
middle ear development
tympanic cavity and auditory tube form from pouch 1 malleus, incus, and tensor tympanic m from arch 1 stapes and stapedius m from arch 2
57
internal ear
housed w/in petrous portion of temporal bone | contains vestibulocochlear organ
58
boney labrinth
boney passage w/in temporal bone filled w/perilymph cochlea vestibule semicircular ducts
59
cochlea
shell shaped bony structure surrounds cochlear duct modiolus- central boney cores aroudn which cochlea spiral 2.5 times spiral lig- anchors cochlear duct to boney wall osseous spiral lamina- anchors chochlear duct to modiolus
60
vestibule
contains utricle and saccule
61
endolymph duct
passes thru vestibular aqueduct and ends as endolymphatic sac matints volume and composition of endolymph fluid
62
inner ear development
membranous labyrinth develops from otic placode (ectoderm) -> otic pit -> otic vesicle boney labyrinth- from surrounding mesenchyme

neuro exam 2 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions