X Orbital Anatomy Anatomy Exam2

Front 1

identify the 6 bones of the bony orbit:

Back 1

(see figure)

Front 2

identify the structures in the diagram:

Back 2

(see figure)

Front 3

identify the labeled structures:
a.
b.

Back 3

(see figure)

Front 4

the central retinal artery comes off of the ...

Back 4

internal carotid

Front 5

what is the function of the following cranial nerves in the orbit:
CNII
CNIII
CNIV
CNV
CNVI
CNVII

Back 5

CNII-vision
CNIII-eye movement and parasympathetic to eye
CNIV-eye movement
CNV-sensation-”autonomics hitch a ride”
CNVI-eye movements
CNVII-close eyelids and parasympathetic to lacrimal

Front 6

Frontal nerve comes from ... and bifurcates into:
1.
2.

Back 6

cn5 - opthalmic branch
1. Supraorbital
2. Supratrochlear

Front 7

identify the labeled nerves:

Back 7

(see figure)

Front 8

Orbicularis Oculi is innervated by:

Back 8

cn7

Front 9

what does this mean:

S04LR6+CN3

Back 9

superior oblique is innervated by CN4
lateral rectus is innervated by CN6
all the rest of the eye muscles are innervated by CN3

Front 10

identify the numbered structures:

Back 10

1. cilium (cilia) - eyelash
2. inferior lacrimal punctum
3. caruncle
4. plica semilunaris
5. conjunctiva, palpebral (eyelid) portion (showing blood vessels)
6. inferior lacrimal canaliculus (surface projection)
7. superior lacrimal canaliculus (surface projection)
8. superior palpebra (upper eyelid)
9. corneo-scleral junction= limbus
10. conjunctiva, bulbar portion (showing blood vessels)

Front 11

identify the labeled structures:

Back 11

(see figure)

Front 12

identify the muscle being tested:

Back 12

(see figure)

Front 13

in the Corneal test, a q-tip is touched to the cornea of they eye, which causes the patient to blink. this test verifies which cranial nerves:

Back 13

CN5 - Cornea-V1
Orbicularis Oculi-CNVII