Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy II Exam 2 > L16: Cranial Openings > Flashcards

L16: Cranial Openings Flashcards

1
Q

describe the auricle

A

the outer ear parts

layer of skin over cartilage

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

define lobule

A

fibrous fatty tissue w/o cartilage

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

sensory innervation to the outer ear

A

great auricular n
auriculotemporal n
lesser occipital n

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

external acoustic meatus

A

from auricle to tympanic memb

2.5 cm, S shaped

lined by skin and ceruminous glands

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

list components of middle ear

A 
tympanic memb
tympanic cavity
auditory ossicles
stapedius muscle
tensor tympani muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does GSA stand for ?

A

general somatic afferent

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

tympanic membrane

A

dense fibrous memb
covered by skin
covered by mucosa internally

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

tympanic cavity

A

air filled cavity w/in petrous portion of temporal bone

round window
oval window

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

round window

A

enclosed by 2ndary tympanic memb

undergoes compensatory excursion w/ mvt of stapes

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

oval window

A

closed by footplate of stapes

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

auditory ossicles

A

malleus – attached to tympanic memb

incus

stapes – attached to oval window/fenestra vestibuili

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

stapedius muscle

A

inserts on stapes neck

contracts reflexively in response to loud sounds

innervated by CN VII

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

tensor tympanii muscle

A

inserts on malleus

contracts in reflex to loud sounds

innervated CN V3

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

CN IX gives off ?

A

tympanic nerve

lateral petrosal nerve

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

tympanic nerve

A

GSA to mucosa of tympanic cavity, mastoid air cells, auditory tube

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

lateral petrosal nerve

A

leaves tympanic cavity to floor of middle cranial fossa

descends thru foramen ovale
to infratemporal fossa

ends in otic ganglion

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

inner ear components

A

bony labyrinth
membranous labyrinth
cochlea
vestibule

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

bony labyrinth

A

lined w/ periosteum

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

blood supply to the inner ear

A

labyrinthine artery – from basilar art

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

basilar artery is formed by ?

A

the fusion of 2 vertebral arteries

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

the inner ear lies w/in ?

A

petrous part of temporal bone

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

cochlea

A

snail shell look
3 turns
round window – fenestra cochlea

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

vestibule

A

contains utricle and saccule

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

CN VIII is ?

A

the vestibulocochlear/auditory nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
semicircular canals
ant/post/lat in 3 planes open into utricle dilation at one end form ampulla
26
ampulla
dilated end of semicircular canals has crista ampullaris to sense rotational acceleration of the head
27
utricle and saccule
w/ macula | sense linear acceleration and pull of gravity on the head
28
bones of orbit -- roof
orbital plate of frontal bone lesser wings of sphenoid special feature -- fossa for lacrimal glands -- tears
29
bones of orbit -- floor
orbital plate of maxilla zygomatic orbital process of palatine
30
orbit floor -- special features
infraorbital groove/canal for: - -infraorbital nerve - --infraorbital art
31
infraorbital nerve
continuation of cranial nerve V2
32
infraorbital artery
branch of external carotid artery
33
bones of orbit -- medial wall
``` lacrimal frontal ethmoid --ethmoid air cells --sphenoid sinus --nasal cavity ```
34
orbit medial wall -- special features
fossa for lacrimal sac | opening for nasolacrimal canal
35
bones of orbit -- lateral wall
``` zygomatic greater wing of sphenoid frontal bone --temporalis muscle --temporal fossa --mid cranial fossa ```
36
external features of the eye
conjunctive eyelids --tarsal plates --tarsal glands
37
eye -- lacrimal apparatus
lacrimal papilla n puncta lacrimal canaliculi n sac nasolacrimal duct
38
sympathetic supply to the lacrimal apparatus
from T1 to sup cervical ganglion to lacrimal gland
39
parasympathetic supply to lacrimal apparatus
from lacrimal nucleus via CNVII to sphenopalatine ganglion to lacrimal gland via CN V
40
openings into orbit
superior orbital fissure optic canal ant/post ethmoidal foramina inf orbital fissure
41
superior orbital fissure
cranial nerves pass thru 3, 4, V1, 6, and sup ophthalmic vein
42
CN V1
``` ophthalmic branch gives rise to: frontal lacrimal nasocilliary branches ```
43
optic canal
allows CN II to pass - optic n and ophthalamic artery
44
anterior and posterior ethmoidal foramina
exit for ant and post ethmoidal nerves
45
inferior orbital fissure
``` cranial n V2 passes its branches --infraorbital n --zygomatic branch --orbital branches ```
46
list the extrinsic eye muscles innervated by CN III
``` inf oblique sup rectus med rectus inf rectus levator palpebrae superioris ```
47
list the extrinsic eye muscles not innervated by CN III
sup oblique CN IV lat rectus CN VI
48
inferior oblique muscle
abduct elevate lat rotate eyeball
49
superior rectus muscle
elevate adduct med rotate eyeball
50
medial rectus muscle
adduct eyeball
51
inferior rectus muscle
depress adduct lat rotate eyeball
52
superior oblique muscle
abduct depress med rotate eyeball
53
lateral rectus muscle
abduct eyeball
54
levator palpebrae superioris muscle
raises upper eyelid
55
parasympathetic innervation of eye
to sphincter pupillae muscle constrict pupil
56
sympathetic innervation of eye
to dilator pupillae muscle
57
sensory innervation of orbit is thru the ?
optic nerve | ophthalmic nerve = V1
58
ophthalmic nerve
``` V1 gives off branches lacrimal n nasocilliary n frontal n ```
59
hard palate of the mouth
ant 2/3s of palate palatine folds of maxillae palatines
60
soft palate of the mouth
post 1/3 of palate fibromuscular fold
61
teeth
maxillary and mandibular top/bottom teeth
62
vestibule of the mouth
between lips/cheeks and gums/teeth leads to the oral cavity proper receives parotid duct
63
oral cavity is bound by ?
teeth and gums | heard/soft palates
64
oral cavity leads to ?
pharynx and uvula
65
sensory innervation of the mouth
CN V2 - -greater/lesser palatine n - -nasopalatine n CN V3 - -lingual n (floor of mouth) - -buccal n
66
motor innervation of parotid glands
parasympathetics from | --inf salivatory nucleus via CN IX
67
innervation of maxillary teeth
sup alveolar branches of CN V2
68
innervation of mandibular teeth
inf alverolar branches of CN V3
69
tongue -- general sensory
ant 2/3s --CN V3 via lingual n post 1/3 --CN IX
70
innervation of tongue -- taste
ant 2/3s --CN VII via chorda tympani post 1/3 --CN IX
71
all intrinsic and extrinsic muscles of the tongue are innervated by ?
CN XII

Anatomy II Exam 2 (8 decks)

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