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Flashcards in EOMs Deck (123)
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1

henry's law of equal innervation

innervation to the muscles of the two eyes is equal and simultaneous

2

MR pathway

parallel medial orbital wall --> pass through CT pulley --> follows curve of globe

3

I band

light skeletal muscle
only actin (double helix)

4

add- muscle

muscle is perpendicular, only torsional movement- no vertical

5

spiral of tillaux

based on the closeness of insetion

6

LR insertion

6.9mm from limbus

7

epimysium

holds all of the muscles together connective tissue

8

what do muscles do for eyes

-stabilize the eye while the other EOMs are working/moving
-ensure that the EOM action that is wanted is the only motion happening

9

right gaze

dexi version

10

what muscles elevate

SR, IO

11

primary position: SR secondary acton

SR secondary: intortion (y axis)
adduction (z axis)

12

muscle movement: perpendiclar

only torsional (y-axis)

13

primary position: IR primary

IR primary: depression (x axis)

14

SO origin

anatomical: lesser wing og sphenoid
effective: trochlea

15

synergistic/agonist

muscles work together to accomplish the same action

16

OMT- VEM
adducted position
if eye does not elevate

IO

17

SO pathway

-anterior through trochlea --> reverse posteriorly to the insertion of the eye -->

18

movement in primary position
horizontal rectus muscles

horizontal rectus muscles only have one action

19

thyroid eye disease

muscles turn red + can be seen on the eye

20

EOM assessment

do cover test to find primary gaze problem

21

SR innervation

superior division of CN3

22

SO insertion

superior, posterior, lateral globe

23

when do you get pain with retrobulbar ON

converging + nasally (MR + SR)

24

insertion

on something that moves; end

25

antagonist muscles

work in opposite direction

26

what muscles depress

IR, SO

27

depression

infraversion

28

what muscles abduct

LR, SO, IO

29

left gaze

levo version

30

what muscles adduct

MR, SR, IR