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8 Cards in this Set

  • Front
  • Back
ABDUCENS NERVE

-courses?
-innervates?
3. Abducens nerve: courses anteriorly on the medial surface ofthe lateral
rectus, innervating it
NASOCILIARY NERVE

-arises from?
4. Nasociliary nerve

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

-LONG CILIARY NERVES
-type of innervation?
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
NASOCILIARY NERVE

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

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

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

-describe
-how does it course
-exit
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
MAXILLARY NERVE

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