The orbit and the eye

Question 1

what bone is the supraorbital notch in?

Answer 1

frontal

Question 2

what bone is the infraorbital foramen in?

Answer 2

maxilla

Question 3

what bone is the optic canal in and the superior orbital fissure in?

Answer 3

sphenoid

Question 4

apex of the orbit?

Answer 4

optic canal

Question 5

lateral wall of orbit?

Answer 5

sphenoid

Question 6

medial wall of orbit?

Answer 6

ethmoid

Question 7

roof of orbit?

Answer 7

frontal bone

Question 8

floor of orbit?

Answer 8

maxilla

Question 9

base of orbit?

Answer 9

orbital rim

Question 10

the 2 parts of orbicularis oculi?

Answer 10

orbital part (above eye)

palpebrae part (below eye)

Question 11

what is the limbus?

Answer 11

corneoscleral junction

Question 12

what nerve controls lacrimal fluid production?

Answer 12

facial (parasympathetic part)

Question 13

is the pupil under autonomic control?

Answer 13

yes

Question 14

what 3 things make up the uvea?

Answer 14

iris

ciliary body

choroid

Question 15

what are the 3 layers of the eye?

Answer 15

fibrous

uvea

retina

Question 16

what are the 2 parts of the fibrous layer of the eye?

Answer 16

sclera and conrea

Question 17

what attaches to the sclera

Answer 17

muscles

Question 18

where is the anterior eye segment?

Answer 18

infront of the lens

Question 19

where is the posterior eye segment?

Answer 19

behind the lens (bigger segment)

Question 20

what segment is the anterior chamber in?

Answer 20

anterior segment (between cornea and iris)

Question 21

what does the anterior chamber contain?

Answer 21

aqueous humour

Question 22

what segment is the posterior chamber in>

Answer 22

anterior segment (between iris and suspensory ligaments)

also contains aqueous humour

Question 23

what does the posterior segment contain?

Answer 23

vitreous humour (common place for floaters)

Question 24

where is aqueous humour made and secreted from?

Answer 24

ciliary body

Question 25

where does the aqueous humour travel to first after leaving ciliary body?

Answer 25

into posterior chamber to nourish the lens

Question 26

where does aqueous humour go after the posterior chamber?

Answer 26

anterior chamber to nourish cornea

Question 27

what happens to aqueous after being the anteerior chamber?

Answer 27

reabsorbed into scleral venous sinuses at iridocorneal angle

Question 28

what does the fundus include?

Answer 28

optic disc macula fovea

Question 29

where is your blind spot?

Answer 29

optic disc

Question 30

where is the greatest density of cones?

Answer 30

macula

Question 31

where is the fovea?

Answer 31

centre of macula | it is the area of most acute vision

Question 32

name the layers of the retina anterior to posterior?

Answer 32

axons of ganglion cells ganglion cells photoreceptors

Question 33

where do the retinal arteries and veins lie in relation to the retina?

Answer 33

they lie anterior to the retina

Question 34

objectsin right visual field are processed by what part of primary visual cortex

Answer 34

left

Question 35

objects in the left visual field are processed by what part of the primary visual cortex?

Answer 35

right

Question 36

what artery branches from the internal carotid?

Answer 36

ophthalmic artery

Question 37

what branches from the ophthalmic artery?

Answer 37

central artery of retina and nasal branches (for littles area) forehead branches

Question 38

what veins drain the orbit/eye?

Answer 38

superior and inferior ophthalmic veins which drain to the cavernous sinus

Question 39

how many extraocular muscles are there?

Answer 39

7

Question 40

name thje extraocular muscles

Answer 40

superior rectus inferior rectus lateral rectus medial rectus superior oblique inferior oblique levator palpebrae superioris

Question 41

what muscle lifts the upper eyelid?

Answer 41

levator palpebrae superioris

Question 42

innervation of lateral rectus

Answer 42

abducent (CN VI)

Question 43

innervation of superior oblique?

Answer 43

trochlear (CN IV)

Question 44

what muscle innvervates all the muscles bar lateral rectus and superior oblique?

Answer 44

occulomotor! (CN III)

Question 45

LR6 SO4 AO3 what does this mean?

Answer 45

lateral rectus -CN 6 superior oblique- CN 4 all others- CN3

Question 46

what movement happens on the vertical axis?

Answer 46

abduction/adduction

Question 47

what movement happens on transverse axis?

Answer 47

elevation/depression

Question 48

what movement happens on anteroposterior axis?

Answer 48

intorsion/extorsion

Question 49

what movement does superior oblique do?

Answer 49

down and out