Orbit - JC

Question 1

bones of orbit

Answer 1

maxillalacrimalethmoidsphenoidpalatinefrontalzygomatic

Question 2

via optic foramen in lesser wing of sphenoid

Answer 2

CN 2 - opticopthalmic artery off internal carotid

Question 3

superior orbital fissure

Answer 3

CN 3,4,5,6 (oculomotor, trochlear, trigeminal, abducens)V1 - opthalmicsuperior opthalmic vein

Question 4

inferior orbital fissure

Answer 4

inferior orbital NAVCN V2zygomatic n. branch of V2inferior opthalmic vein

Question 5

supra orbital foramen

Answer 5

NAV

Question 6

infraorbital foramen

Answer 6

NAV. branch of maxillary of trigeminalenters cranium through pterygoid fossa

Question 7

anterior ethmoidal foramen

Answer 7

NAVbranch of nasociliary of maxillary of trigeminal (V2)

Question 8

posterior ethmoidal foramen

Answer 8

NAVbranch of nasociliary of maxillary of trigeminal (V2)

Question 9

zygomaticofacial foramen

Answer 9

NAV. via zygomatic of V2 n via inferior orbital fissure (anterior exit)

Question 10

zygomaticotemporal foramen

Answer 10

NAV. via zygomatic of V2 n via inferior orbital fissure (posterior exit)

Question 11

levator palpebrae superioris

Answer 11

elevates eyelidmost superficial. Insert on eyelidfrom annulus tendon

Question 12

superior rectus

Answer 12

up and indeep to levitator palpebraefrom annulus tendon

Question 13

inferior rectus

Answer 13

down and infrom annulus tendon

Question 14

medial rectus

Answer 14

toward the midlinefrom annulus tendon

Question 15

lateral rectus

Answer 15

directs laterally from annulus tendon

Question 16

superior oblique

Answer 16

down and outfrom annulus tendonthrough trochlea (hook) so trochlear n.

Question 17

inferior oblique

Answer 17

up and outNOt annulus tendon but orbital floor aka maxilla

Question 18

how do you look straight up

Answer 18

superior rectus (up and in)inferior oblique (up and out)

Question 19

how do you look straight down

Answer 19

inferior rectus (down and in)superior oblique (down and out)

Question 20

innervation of eye muscles exceptions

Answer 20

LR6SO4lateral rectus - abducenssuperior oblique - trochlear

Question 21

besides LR6SO4 what innervates eye muscles

Answer 21

CN 3 oculomotor

Question 22

divisions of V2

Answer 22

frontal lacrimal nasociliary

Question 23

frontal branch of V2

Answer 23

superficial to leavtor palpebrae superioris. forks:supraorbital and trochlear. sensory to scalp and eyelid

Question 24

lacrimal branch of V2

Answer 24

sensory to lacrimal gland.

Question 25

nasociliary branch of V3

Answer 25

branches into posterior and anterior ethmoidal foramen

Question 26

ciliary ganglion

Answer 26

off nasociliary (V2) collection of nerve bodies

Question 27

short ciliary nerves

Answer 27

off ganglia to back of eyefrom nasociliary branch sensory

Question 28

long ciliary nerves

Answer 28

branch of nasociliary to back of eyesensory

Question 29

opthalmic artery

Answer 29

via optic canal

Question 30

branches of opthalmic artery

Answer 30

lacrimal supraorbitalanterior&posterior ethmoidals

Question 31

opthalmic vein

Answer 31

superior branch exits via superior orbital fissureinferior branch exit via inferior orbital fissureboth drain into cavernous sinus

Question 32

lacrimal gland

Answer 32

in lacrimal fossa

Question 33

puncta

Answer 33

openings at medial aspect of eye

Question 34

tears travel and collected in what?

Answer 34

canal and lacrimal sac

Question 35

nasolacrimal duct

Answer 35

below inferior nasal concha