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Front 1

ABDUCENS NERVE

-courses?
-innervates?

Back 1

3. Abducens nerve: courses anteriorly on the medial surface ofthe lateral
rectus, innervating it

Front 2

NASOCILIARY NERVE

-arises from?

Back 2

4. Nasociliary nerve

a. Arises from the ophthalmic nerve near the superior orbital fissure;
its branches are noted below

Front 3

NASOCILIARY NERVE

-LONG CILIARY NERVES
-type of innervation?

Back 3

4. Nasociliary nerve

b Long ciliary nerves: given off as the nasociliary nerve courses medi-
ally, superior to the optic nerve; they enter the sclera near the optic
nerve and provide general sensory innervation to the eye

Front 4

NASOCILIARY NERVE

-POSTERIOR ETHMOIDAL NERVE
-courses
-enters
-type of innervation

Back 4

4. Nasociliary nerve

c Posterior ethmoidal nerve: arises as the nasociliary nerve courses an-
teriorly between the superior oblique and medial rectus; enters the
posterior ethmoidal foramen and provides sensory innervation to the
sphenoidal sinus and posterior ethmoidal air cells

Front 5

NASOCILIARY NERVE

ANTERIOR ETHMOIDAL NERVE (terminal branch)
-enters
-type of innervation
-emerges above?
-int. + ext. nasal nerves

Back 5

4. Nasociliary nerve

d Anterior ethmoidal nerve (terminal branch): enters the anterior eth-
moidal foramen and provides sensory innervation to the anterior and
middle ethmoidal air cells; it then emerges above the cribriform plate,
descends through it into the nasal cavity, and divides into the inter-
nal nasal and external nasal nerves which provide sensory innerva-
tion to the nasal cavity and nose, respectively

Front 6

NASOCILIARY NERVE

INFRATROCHLEAR NERVE (terminal branch)
-emerges from?
-supplies?

Back 6

4. Nasociliary nerve

e Infratrochlear nerve (terminal branch): emerges from the orbit
interior to the trochlea and supplies the medial part of the upper
eyelid

Front 7

OPTIC NERVE

-describe
-how does it course
-exit

Back 7

C. Optic nerve: actually, not a nerve, but an extension of the brain covered by meninges; emerges from the posterior aspect of the eye. courses posteri-
orly within the retrobulbar space, and exits the orbit through the common
annular tendon and optic canal

Front 8

MAXILLARY NERVE

-exits skull
-gives off what nerves?
--how do they enter orbit?

Back 8

D. Maxillary nerve

1. Exits the skull through foramen rotundum and emerges into the pterygo-palatine fossa; here, it gives off the infraorbital and zygomatic nerves
which enter the orbit through the inferior orbital fissure