Anatomy of the eye

Question 1

which nerves are attached to the brainstem

Answer 1

3-12

Question 2

which nerve come into the orbit from the crainial cavity?

Answer 2

optic nerve-, occulomotor , abducen , trochlear

3,4,6

Question 3

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

Answer 3

opthalmic artery (branch of internal carotid)

Question 4

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

Answer 4

cn2 (optic nerve), opthalimic artery

Question 5

which cranial nerves control the movement of the eyeball

Answer 5

3,4,6

Question 6

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

Answer 6

sensory nerve

Question 7

which muscle do you use to close your eye?

Answer 7

orbitalis occuli

Question 8

which nerve is responsible for moving the muscles of the face

Answer 8

facial nerve

Question 9

which 2 nerves are involved in the blink reflex

Answer 9

v1, 7

Question 10

which nerves go though the superior orbital fissure

Answer 10

3,4,6,v1

Question 11

What is the formula to remember the muscles of the eye

Answer 11

LR6SO4AO3

Question 12

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

Answer 12

autonomic symptoms

Question 13

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

Answer 13

down and out

Question 14

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

Answer 14

occulomotor nerve aka cn 3

Question 15

someones eye is stuck medially what nerve is damaged

Answer 15

abducens cn6

Question 16

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

Answer 16

the 4th crainial nerve aka trochlear

Question 17

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

Answer 17

4th crainial nerve

Question 18

what is the name of the 3rd crainial nerve

Answer 18

occulomotor

Question 19

what nerve helps you look laterally

Answer 19

abducens - 6

Question 20

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

Answer 20

nose and upper lip

Question 21

where is the cavernous sinus

Answer 21

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

Question 22

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

Answer 22

superior opthalmic vein

Question 23

what is the direct route of cavernous sinus infection

Answer 23

superior opthalmic vein

Question 24

superior opthalmic vein goes thru which fissure

Answer 24

superior orbital?

Question 25

the opthalmic artery is blocked, what will occur

Answer 25

you will go blind

Question 26

what is the function of the lacrimal gland

Answer 26

to lubricate the eye

Question 27

what innervates the lacrimal gland

Answer 27

facial nerve

Question 28

which nerve is responsible for the secretion of tears

Answer 28

facial nerve

Question 29

the greater petrosal | al nerve is a branch of what

Answer 29

facial nerve

Question 30

which specific branch of the facial nerve innervates the lacrimal gland

Answer 30

greater petrosal nerve

Question 31

what are the 3 layers of the eyeball

Answer 31

outer fiberous vascular middle inner layer

Question 32

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

Answer 32

cornea

Question 33

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

Answer 33

sclera

Question 34

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

Answer 34

infront of the lens

Question 35

how do the anterior and posteror chambers of the eye communicate

Answer 35

pupil

Question 36

list the path of light going through the eye

Answer 36

``` cornea aqueus humor lens vitrous humor retina ```

Question 37

is the cornea vascularized

Answer 37

no, it is avascular!!

Question 38

what is located in the cornal limbus

Answer 38

canal of schlem

Question 39

the sclera corneal junction is called ...

Answer 39

the canal of schlem

Question 40

what 3 things make up the middle layer of the eye

Answer 40

choroid, ciliary body, iris

Question 41

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

Answer 41

cilliary body

Question 42

what kind of muscle is the cirillary muscle

Answer 42

smooth muscle , it controls the convexity of the lens

Question 43

what is the most important function of the cilliary process

Answer 43

it secretes aqeous humor

Question 44

what kind of fibers innervate the ciliary body

Answer 44

parasympathetic

Question 45

are the muscles used to dialate the iris somatic or autonomic

Answer 45

autonomic

Question 46

dialator pupilae is done by..

Answer 46

sympathetic

Question 47

constrictor pupillae is done by ..

Answer 47

parasympathetic

Question 48

what divides the anterior from the posterior chamber of the eye

Answer 48

iris

Question 49

what produces aquous humor

Answer 49

cilliary body epithelium

Question 50

aqueous humor is produced in which chamber

Answer 50

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

Question 51

where is aqeous humor absorbed

Answer 51

in the canal of schlem

Question 52

incrased intracraininal pressure leads to what

Answer 52

optic cupping

Question 53

optic cupping is a feature of what

Answer 53

raised intraoccular pressure

Question 54

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

Answer 54

intraoccular = optic disk cupping intracrainal = papilledema

Question 55

how many layers in the retina

Answer 55

10

Question 56

the optic nerve leaves the eyeball where

Answer 56

optic disk

Question 57

where is the blindspot in the eye

Answer 57

optic disk

Question 58

what are the 3 branches of opthalmic division of the trigeminal

Answer 58

frontal nasal lacrimal

Question 59

thru which crainial nerve does parasympathetic come thru the orbit

Answer 59

cn 3

Question 60

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

Answer 60

constricted

Question 61

occulomotor of the edingerwesphal nucleus

Answer 61

cillary pupillae and constrictor pupillae are innervated by

Question 62

which 2 nerves innervate the eye

Answer 62

optic+occulomotor

Question 63

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

Answer 63

cn2 - optic cn-3 oculomotor

Question 64

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

Answer 64

CN-3 = oculomotor

Question 65

what happens in the argyll robertson pupil.

Answer 65

There is medial convergence of the eye, but the pupil will not react . seen in syphallis and dm prostitues pupil