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Neuro: Headache Week 1 > Anatomy of the eye > Flashcards

Anatomy of the eye Flashcards

1
Q

which nerves are attached to the brainstem

A

3-12

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2
Q

which nerve come into the orbit from the crainial cavity?

A

optic nerve-, occulomotor , abducen , trochlear

3,4,6

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3
Q

what is the major arteries in the orbit? What is this artery a branch of?

A

opthalmic artery (branch of internal carotid)

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4
Q

what 2 things come thorught the optic canal to enter the orbital cavity?

A

cn2 (optic nerve), opthalimic artery

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5
Q

which cranial nerves control the movement of the eyeball

A

3,4,6

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6
Q

what kind of nerve is the opthalmic division of the trigeminal nerve

A

sensory nerve

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7
Q

which muscle do you use to close your eye?

A

orbitalis occuli

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8
Q

which nerve is responsible for moving the muscles of the face

A

facial nerve

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9
Q

which 2 nerves are involved in the blink reflex

A

v1, 7

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10
Q

which nerves go though the superior orbital fissure

A

3,4,6,v1

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11
Q

What is the formula to remember the muscles of the eye

A

LR6SO4AO3

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12
Q

if there is a problem with occulomotor nerve what is it always associaed with with what kind of symtoms

A

autonomic symptoms

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13
Q

if the occulomotor nerve is damaged what will the position of the eyeball be

A

down and out

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14
Q

someones eye is in the down and out position, and dilated pupil what nerve has been damaged

A

occulomotor nerve aka cn 3

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15
Q

someones eye is stuck medially what nerve is damaged

A

abducens cn6

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16
Q

a person has double vision when looking down, such as reading or going down the stairs. what nerve has been damaged

A

the 4th crainial nerve aka trochlear

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17
Q

a person must tilt thier head in order to not have double vision, which nerve has been damaged?

A

4th crainial nerve

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18
Q

what is the name of the 3rd crainial nerve

A

occulomotor

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19
Q

what nerve helps you look laterally

A

abducens - 6

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20
Q

what is the danger area of the face, and why is it called this

A

nose and upper lip

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21
Q

where is the cavernous sinus

A

behind the optic chiasm . An infection in this region can go thru the cavernous sinus and enter the brain . This goes thru the superior opthalmic vein

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22
Q

a person has an infection that traveled from his cavernous sinus to the brain . how did it get there

A

superior opthalmic vein

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23
Q

what is the direct route of cavernous sinus infection

A

superior opthalmic vein

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24
Q

superior opthalmic vein goes thru which fissure

A

superior orbital?

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25
Q

the opthalmic artery is blocked, what will occur

A

you will go blind

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26
Q

what is the function of the lacrimal gland

A

to lubricate the eye

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27
Q

what innervates the lacrimal gland

A

facial nerve

28
Q

which nerve is responsible for the secretion of tears

A

facial nerve

29
Q

the greater petrosal

al nerve is a branch of what

A

facial nerve

30
Q

which specific branch of the facial nerve innervates the lacrimal gland

A

greater petrosal nerve

31
Q

what are the 3 layers of the eyeball

A

outer fiberous
vascular middle
inner layer

32
Q

the anterior part of the outer fiberous layer of the eye is called

A

cornea

33
Q

the posterior part of the outer fiberous layer of the eye is called

A

sclera

34
Q

both the anterior and posterior chambers of the eye are located where

A

infront of the lens

35
Q

how do the anterior and posteror chambers of the eye communicate

A

pupil

36
Q

list the path of light going through the eye

A 
cornea
aqueus humor
lens
vitrous humor 
retina
37
Q

is the cornea vascularized

A

no, it is avascular!!

38
Q

what is located in the cornal limbus

A

canal of schlem

39
Q

the sclera corneal junction is called …

A

the canal of schlem

40
Q

what 3 things make up the middle layer of the eye

A

choroid, ciliary body, iris

41
Q

the thickend portion of the vascular coat between teh choroid and the iris is called

A

cilliary body

42
Q

what kind of muscle is the cirillary muscle

A

smooth muscle , it controls the convexity of the lens

43
Q

what is the most important function of the cilliary process

A

it secretes aqeous humor

44
Q

what kind of fibers innervate the ciliary body

A

parasympathetic

45
Q

are the muscles used to dialate the iris somatic or autonomic

A

autonomic

46
Q

dialator pupilae is done by..

A

sympathetic

47
Q

constrictor pupillae is done by ..

A

parasympathetic

48
Q

what divides the anterior from the posterior chamber of the eye

A

iris

49
Q

what produces aquous humor

A

cilliary body epithelium

50
Q

aqueous humor is produced in which chamber

A

posterior . From the posterior chamber it goes to the anterior chamber thru the pupil .

51
Q

where is aqeous humor absorbed

A

in the canal of schlem

52
Q

incrased intracraininal pressure leads to what

A

optic cupping

53
Q

optic cupping is a feature of what

A

raised intraoccular pressure

54
Q

how do you tell the difference between raised intraoccular pressure and raised intracrainial pressure

A

intraoccular = optic disk cupping

intracrainal = papilledema

55
Q

how many layers in the retina

A

10

56
Q

the optic nerve leaves the eyeball where

A

optic disk

57
Q

where is the blindspot in the eye

A

optic disk

58
Q

what are the 3 branches of opthalmic division of the trigeminal

A

frontal
nasal
lacrimal

59
Q

thru which crainial nerve does parasympathetic come thru the orbit

A

cn 3

60
Q

a person has a tumor on their lung and is diagnosed with horner syndrome , what does thier pupil look like

A

constricted

61
Q

occulomotor of the edingerwesphal nucleus

A

cillary pupillae and constrictor pupillae are innervated by

62
Q

which 2 nerves innervate the eye

A

optic+occulomotor

63
Q

when you shine a light in the eye, which nerve sense the light . Also pupillary constriciton should occur which nerve is respnosible for that

A

cn2 - optic

cn-3 oculomotor

64
Q

a person has a light shined in their eye, and there is no constriction of thier pupil. Which nerve is messed up

A

CN-3 = oculomotor

65
Q

what happens in the argyll robertson pupil.

A

There is medial convergence of the eye, but the pupil will not react .

seen in syphallis and dm

prostitues pupil

Neuro: Headache Week 1 (9 decks)

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