eye muscles

Question 1

role of the intrinsic muscles of the eye

Answer 1

to contol the diameter of the pupil

Question 2

role of extrinic muscles of the eye

Answer 2

move the eyeball

Question 3

what are the 4 straignt musle of the yee

Answer 3

medial recuts
lateral rectus
superior rectus
inferioro rectus

Question 4

where do the recti muscles arrise from

Answer 4

apex of the orbit form an annular fibrous ring

Question 5

where do the superior oblique muscles arrise from

Answer 5

rootf othe of the orbit positerly
spphenoid bone

Question 6

where do eshte inferio oblique msulce arrise from

Answer 6

floor of the orbit antieroy

Question 7

what is a trochlea

Answer 7

pulley (anatomy terms)

Question 8

which mucles has a trochlea

Answer 8

superior oblique

Question 9

what bone is behind te annular fibrous

Answer 9

splenoid bone

Question 10

role of levator p;alpebrae superioris

Answer 10

elevate the eyelid

Question 11

whihc part of hte sclear does hte so and io jion

Answer 11

posteior

Question 12

which part of the sclear does hte recti join

Answer 12

the anterior part of the sclera

Question 13

what nerve inervates the so

Answer 13

trochlear nerve

Question 14

what nerve innervates the lr

Answer 14

abducent

Question 15

what nerve innervates everthing apart from so and lr

Answer 15

occulomotor

Question 16

what is the movement of eyes up and down called

Answer 16

levating and depressing

Question 17

what is the movement of the eyes towards and away from the nose called

Answer 17

adduction - to wards nose
abduction - away from nose

Question 18

what is intorsion and extorision

Answer 18

intorsion - top of eye towards nose
extorsion - top of eye away from nose

Question 19

what is the main action of the the 1 - mr
2 - lr

Answer 19

mr - adduction
lr - abduction

Question 20

what is the actions of te sr

Answer 20

elevation
adduction
intorsion

Question 21

why does the sr adduct

Answer 21

due to its 23 degree orientation

Question 22

actionons of the ir

Answer 22

depression, adduction, extrusion

Question 23

what is special about the ir

Answer 23

it adducts and extorsion , due to its orintation

Question 24

what is the movemtns of the so

Answer 24

intorsion, depression, abduction

Question 25

why does the superior oblique cause depression

Answer 25

due to its place in the eye is very postioery, thus pulling it forwards and down

Question 26

what is the ovemtn of the xo

Answer 26

extorison, elvation , abdution

Question 27

radsin

Answer 27

recti ADductors Superiors Intortors

Question 28

move ments of eyes to the right name

Answer 28

dextorverion

Question 29

movement of eyes to left naem

Answer 29

levoversion

Question 30

what is the movemtn of the eye to the right and up

Answer 30

detroverion elvation

Question 31

what is strabismus

Answer 31

squiting

Question 32

what is esotropia

Answer 32

wher the squint is becoesn one eye moves too meidal

Question 33

what is exotropia squint

Answer 33

because one eye moves to lateral

Question 34

amblypopia

Answer 34

lazy eye

Question 35

what is the cuase of amblyopia

Answer 35

brain suppreses image of one eye leading to poor vision in that eye with out any patholoyg

Question 36

what is diplopia

Answer 36

double vison

Question 37

cuases of double visoin

Answer 37

nerve palsies , leading to squint, the focal point on eye moves suddely

Question 38

what are the 3 intrinsic eye msuels

Answer 38

cilararis muscle constricor pupillae dilatora pupillae

Question 39

what intrinsic eye muslces are innervted by parasympathiec and by what nerve

Answer 39

cillaris musles consticor pupillae by 3rd craial nerve

Question 40

what is the inervation of the dilator pupilae

Answer 40

sympatheic,

Question 41

where does the ysmpahtic innervationfor the dilator pupilae follow

Answer 41

around intenral carroid artyer

Question 42

where is the cilaris muslce found

Answer 42

cilary body

Question 43

where is the constior pupillae found

Answer 43

iris at pupillary border

Question 44

where is the dilator pupillae found

Answer 44

radillar around the iris

Question 45

is sympatheic or parasympatheic triggered by increased lumination

Answer 45

parasympatheic

Question 46

is sympatheic or parasympdic triggere dby decread illumation

Answer 46

sympatheic