Eyeball

Question 1

Orbital Margin

Answer 1

Zygomatic, Frontal, Maxilla

Question 2

Apex of Optic Cavity

Answer 2

Optic Foramen

Question 3

Optic foramen/canal transmits

Answer 3

1. Optic Nerve (CNII)

2. Opthalmic Artery - opthalmic branch of the internal carotid - blood supply to the entire eye

Question 4

Superior orbital fissure

Answer 4

1. Oculomotor N - CNIII
2. Trochlear N - CN IV
3. Abducens N - CN VI
4. Opthalmic div of trigeminal (CN V1)
5. Suprior Opthalmic Vein

Question 5

Inferior Orbital Fissure

Answer 5

1. Inferior Opthalmic Vein
2. Infraorbital NAV
3. Zygomatic N

Question 6

Supraorbital Foramen

Answer 6

NAV of the same name

Question 7

Infraorbital Canal

Answer 7

1. Infraorbital N
2. Zygomatic N
   - both are cutaneous branches of the Maxillary N (CNV2)
   * Infraorbital N enters through the inferior orbital fissure, runs along the floor of orbit, enters canal, then leaves through infraorbital foramen

Question 8

Anterior Ethmoidal Foramen

Answer 8

NAV of the same name

*branch of nasociliary n, branch of opthalmic n of the trigeminal

Question 9

Posterior Ethmoidal Foramen

Answer 9

NAV of the same name

**branch of nasociliary n, branch of opthalmic n of the trigeminal

Question 10

Name for duct that gets encrircled by bone -> tear gland

Answer 10

Nasolacrimal Duct

Question 11

Zygomaticofacial Foramen

Answer 11

considered w/ orbital region due to the transmission of the zygomatic nerve through the inferior orbital fissure into the orbital cavity and out through formaina

Question 12

Zygomaticotemporal foramen

Answer 12

considered w/ the orbital region due to transmission of the zygomatic nerve through inferior orbital fissure into the orbital caivty and out through the foramina

Question 13

What is the general consensus on the origin of the extrinsic muscles of the eye?

Answer 13

All of them originate from the annular tendon w/ the exception of the inferior oblique, which originates from the orbital plate of the maxilla

Question 14

Levator palpebrae superiorirs

Answer 14

elevates upper eyelid

Question 15

Superior rectus

Answer 15

up and in

Question 16

Inferior rectus

Answer 16

down and in

Question 17

Medial rectus

Answer 17

Adducts towards midline

Question 18

Laterial rectus

Answer 18

Abducts away from midline

Question 19

Superior oblique

Answer 19

down and out

tendon goes through trochlea

Question 20

Inferior oblique

Answer 20

Up and out

Question 21

To look straight up

Answer 21

Superior rectus + Inferior Oblique

Question 22

To look straight down

Answer 22

Inferior Rectus + Superior Oblique

Question 23

Oculomotor N

Answer 23

SR
MR
IR
IO
Levator Palpebrae

Question 24

Trochlear

Answer 24

SO

Question 25

Abducens

Answer 25

LR

Question 26

Frontal Nerve

Answer 26

Sensory N to scalp and upper eyelid

Question 27

Lacrimal Nerve

Answer 27

Sensory nerve to lacrimal gland, eye conjuctiva, and lateral upper eyelid

Question 28

Nasociliary Nerve

Answer 28

1. Long Ciliary 2. Posterior Ethmoidal N 3. Anterior Ethmoidal 4. Infratrochlear N

Question 29

Posterior Ethmoidal N

Answer 29

Sensory to post ehtmoidal cells (sinsus)

Question 30

Anterior Ethmoidal N

Answer 30

Sensory to median skin on external nostril as external nasal N

Question 31

Infratrochlear N

Answer 31

Sensory to skin and conjuctiva of medial upper eyelid

Question 32

Ciliary Ganglion Location

Answer 32

Off of the nasociliary N.

Question 33

Short Ciliary Nerves

Answer 33

Contain sensory fibers for eye and cornea | -btwn ciliary gangion and the back of the eye

Question 34

Long Ciliary Nerves

Answer 34

Contain sensory fibers innervating the eye and cornea

Question 35

Blood Vessels for the Eye

Answer 35

Opthalmic Artery | Opthalmic Vein

Question 36

Opthalmic Artery Branches

Answer 36

1. Lacrimal branch (to lacrmial gland) 2. Supraorbital Branch 3. Anterior/posterior Ehtmoidals

Question 37

Ophthalmic Artery Enters through the _____.

Answer 37

Optic Canal

Question 38

Ophthalmic Vein Branches

Answer 38

1. Superior Branch | 2. Inferior Branch

Question 39

Ophthalmic Vein Clinical Sig.

Answer 39

Drain to cavernous sinus | -infection can spread through venous connections to cranial vault

Question 40

Superior Ophthalmic Vein Exits through the ______.

Answer 40

Superior Orbital Fissure

Question 41

Inferior Ophthalmic Vein exits through the ______.

Answer 41

Inferior Orbital Fissure

Question 42

Lacrimal Gland breakdown

Answer 42

1. Gland 2. Puncta 3. Canals 4. Lacrimal Sac 5. Nasolacrimal Duct

Question 43

Where does nasolacrimal duct empty into?

Answer 43

Inferior nasal meatus