Brainscape's Knowledge GenomeTM

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


See full index

SP16 Anatomy Exam 2 > Orbit & Eye > Flashcards

Orbit & Eye Flashcards

1
Q

what are the 4 features of the eyelid

A

palpebral conjuctiva
bulbar conjuctiva
conjuctival sac
fornices

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

where is the palpebral conjuctiva

A

membrane lining inner eyelid

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

where is the bulbar conjuctiva

A

membrane lining surface of eye

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

where is the conjuctival sac

A

potential space between these membranes

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

where is the fornices

A

conjuctival reflections from eyelid to eye

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

what provides form for eyelids?

A

superior and inferior tarsus

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

what sebaceous glands are seen through conjuctiva

A

tarsal glands

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

what tendon does CN III innervate

A

levator palperae superioris muscle

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

what are the bones of the orbit

A 
frontal
sphenoid
ethmoid
palatine
lacrimal
maxillary
zygomatic
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what arteries go through the anterior and posterior ethmoidal foramen

A

anterior and posterior ethmoidal arteries

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

Objects piercing roof enter ___

A

anterior cranial fossa

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

Objects piercing floor enter ?

A

maxillary sinus

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

Objects piercing medial wall enter ?

A

ethmoid air cells

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

Objects piercing lateral wall enter ?

A

temporal fossa

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

Objects piercing superior orbital fissure enter ?

A

middle cranial fossa

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

what is the floor of the orbit?

A

roof of maxillary sinus

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

what does a medial orbital wall injury affect?

A

ethmoidal air cells

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

what does a lateral orbital wall injury affect?

A

temporal fossa

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

what goes through the optic canal

A

CN II and opthalamic artery

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

what goes through the superior orbital fissure?

A

CN III, IV, V1, VI, and opthalamic vv

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

what goes through the supraorbital notch/foramen

A

supraorbital n (CN V1) & a

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

what goes through the inferior orbital fissure?

A

infraorbital and zygomatic n (CN V2) and a

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

what goes through the infraorbital foramen

A

infraorbital n (CN V2) and a

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

what goes through the anterior ethmoidal foramen?

A

anterior ethmoidal n and a (CNv1)

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

what goes through the posterior ethmoidal foramen?

A

posterior ethmoidal n (CNv1) and a

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

what goes through the foramen rotundum

A

maxillary nerve

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

what are the features of the external eye

A

conjuctiva
sclera
cornea

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

define conjuctiva

A

mucous membrane of eye and lids

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

define sclera

A

posterior 5/6 of outer layer (white part)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

define cornea

A

anterior 1/6 of outer layer (transparent)

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

what are the 4 features of the middle eye

A

choroid
ciliary body
iris
pupil

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

define choroid

A

thin middle layer of ciliary aa & vorticose vv

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

define cilary body

A

smooth muscle around lens for accommodation

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

what controls focal point of lens?

A

ciliary body

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

define iris

A

colored smooth muscle behind cornea controlling pupil size

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

define pupil

A

adjustable aperture through which light enters eye

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

how does the ciliary body muscles affect the zonular fibers?

A

change the tension of the zonular fibers, change the focus of the lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

what are the 4 features of the internal eye

A

retina
macula lutea
fovea centralis
optic disc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

define retina

A

neural layer of eye which receives a light rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

define macula lutea

A

oval region of retina for visual acuity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

defina fovea centralis

A

most acute vision site at center of macula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

define optic disc

A

regions where CN II and retinal vessels enter/exit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

what represents a blind spot?

A

optic disc (no photo receptors)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

why is the optic disc considered a blind spot?

A

no photoreceptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

T/F vessels are over the fovea centralis

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

how do the meningeal layers extend to the eye?

A

through the optic nerve

47
Q

what are the 4 features of the refractive media of the eye

A

cornea
lens
aqueous humor
vitreous humor

48
Q

define cornea

A

largely responsible for refraction of light in the eye

49
Q

define lens

A

focuses light rays & near or distant objects on retina

50
Q

define aqueous humor

A

watery filling anterior to lens

51
Q

define vitreous humor (body)

A

gelatinous filling posterior to lens

52
Q

what is the nervous “visual” layer

A

refractive media

53
Q

what are the 4 features of the lacrimal apparatus

A

lacrimal gland
lacrimal canaliculi
lacrimal sac
nasolacrimal duct

54
Q

whats is lacrimal gland function?

A

produces lacrimal fluid (tears), flows inferomedially

55
Q

what is the lacrimal canaliculi function

A

transports tears to lacrimal sac

56
Q

what is lacrimal sac function

A

drains tears to nasolacrimal duct

57
Q

what is nasolacrimal duct

A

drains tears through nasolacrimal canal (under inferior nasal concha)

58
Q

levator palpebrae superioris m action?

A

raises upper eyelid

59
Q

superior rectus m action?

A

elevates and adducts eye

rotates eye medially

60
Q

inferior rectus m action?

A

depresses and adducts eye

rotates eye laterally

61
Q

lateral rectus m action?

A

abducts eye

62
Q

medial rectus m action?

A

adducts eye

63
Q

superior oblique m action

A

depresses and abducts eye

64
Q

inferior oblique m action?

A

elevates and abducts eye

65
Q

which muscle helps the eye look “down and out”

A

superior oblique m

66
Q

what tendon is oriented with superior oblique m?

A

trochlea

67
Q

which muscle makes the eye look up and out?

A

inferior oblique m

68
Q

which muscles ABDUCT the eye?

A

obliques

69
Q

which muscles ADDUCT the eye?

A

recti

70
Q

which cranial nerve supplies superior oblique m

A

CN IV

71
Q

which muscles does the CN III supply?

A 
LPS
SR
MR
IR
IO
72
Q

which cranial nerve supplies lateral rectus m?

A

CN VI

73
Q

which cranial nerve carries p-symp to ciliary ganglion?

A

CN III

74
Q

how can the eye be placed to test lateral and medial rectus mm?

A

neutrally

75
Q

how can the eye be placed to test superior and inferior rectus mm?

A

abducted

76
Q

how can the eye be placed to test superior and inferior oblique mm?

A

adducted

77
Q

the position of ab/adduction is ____ of muscle action

A

opposite

78
Q

what is the optic nerve sensory for?

A

special sense of sight

79
Q

where are the optic nerve fibers?

A

between the eye and chiasm

80
Q

what is the optic chiasm

A

intermingling of nerve fibers

81
Q

what is the optic tract

A

nerve fibers from chiasm to brain

82
Q

what are the two visual fields of the optic pathway

A

temporal

nasal

83
Q

which visual field crosses over the chiasm?

A

temporal vision

84
Q

which visual field remains ipsilateral?

A

nasal vision

85
Q

what does visual field testing detect?

A

blindness

86
Q

what does the optic nerve lesion result in?

A

total blindness in affected eye

87
Q

what does the optic chiasm lesion produce?

A

loss of peripheral vision

88
Q

what does the optic tract lesion result in?

A

ipsilateral nasal visual field loss and contralateral temporal field loss

89
Q

pattern of optic tract lesion is due to ____ of ____ visual fields

A

crossing of temporal visual fields

90
Q

what does the ciliary ganglion receive?

A

p-symp from CN III

91
Q

what does the ciliary ganglion supply?

A

p-symps to ciliary muscle and pupillary sphincter muscle

92
Q

what does pupillary dilator muscle receive?

A

sympathetics from internal carotid plexus

93
Q

where are the preganglionic sympathetic cell bodies?

A

T1

94
Q

what does the pupillary light reflex test?

A

CN II and CN III

95
Q

how do we tell if there is a CN III p-symp lesion?

A

pupil remains dilated

96
Q

what are the 3 divisions of the CN V1

A

“NFL”
Nasociliary n
Frontal n
Lacrimal n

97
Q

what does the nasociliary n contain?

A

ethmoidal and infratrochlear nn

long ciliary nn (sensory and symp) to posterior eye

98
Q

what does the frontal n branch to?

A

supraorbital and supratrochlear nn

99
Q

what does the lacrimal n supply?

A

lacrimal gland and conjuctiva

100
Q

what are the 7 arteries of the orbit and eye

A 
ophthalmic a
posterior ciliary aa
central retinal a
ethmoidal aa
supraorbital a
supratrochlear a
lacrimal a
101
Q

what does the ophthalmic a give rise to?

A

all arteries of the eye

102
Q

what does the posterior ciliary aa supply?

A

outer and middle layers of the eye

103
Q

what does the central retinal a supply?

A

inner layer of retina

104
Q

what does the ethmoidal a supply

A

anterior cranial fossa, nose, and sinuses

105
Q

what does the supraorbital a supply

A

central region of forehead

106
Q

what does the supratrochlear a supply

A

medial region of forehead

107
Q

what does lacrimal a supply

A

lacrimal gland

108
Q

what are the 4 veins of the orbit and eye

A

superior ophthalmic v
inferior ophthalmic v
central retinal v
vorticose vv

109
Q

what does the vorticose vv drain into?

A

superior and inferior opthalmic vv

110
Q

where does central retina v drain?

A

cavernous sinus

111
Q

what does the inferior ophthalmic v anastomose with and drain to?

A

anastomose with facial v and drain to cavernous sinus

112
Q

what layer does the vorticose veins drain?

A

choroid layer

113
Q

what layer does the central veins drain?

A

the retinal layer

SP16 Anatomy Exam 2 (14 decks)

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