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Front 1

MAXILLARY NERVE

INFRAORBITAL NERVE
-how do they course?
-emerges on the face thru?

Back 1

2. Infraorbital nerve: courses forward along the floor of the orbit in the
infraorbital groove and infraorbital canal; emerges onto the face through
the infraorbital foramen

Front 2

MAXILLARY NERVE

ZYGOMATIC NERVE
-how does it divide?
-emerge onto the face thru?
-branch to lacrimal nerve?

Back 2

3. Zygomatic nerve: upon entering the orbit, the zygomatic nerve divides
into the zygomaticotemporal and zygomaticofacial nerves, which pen-
etrate the zygomatico-orbital foramina and emerge onto the face through
the zygomaticotemporal and zygomaticofacial foramina, respectively;
before entering its zygomatico-orbital foramen, the zygomaticotemporal
nerve gives off a branch to the lacrimal nerve containing postganglionic
parasympathetic secretomotor fibers from the pterygopalatine ganglion
for the lacrimal gland

Front 3

OPHTHALMIC ARTERY

-how does it arise in the cranial cavity?
-enters?

Back 3

1. Arises within the cranial cavity from the internal carotid artery, traverses
the optic canal inferior to the optic nerve, enters the retrobulbar space
lateral to the optic nerve, and then turns medially, superior to the optic
nerve, to course with the nasociliary nerve; its branches are noted below

Front 4

OPHTHALMIC ARTERY

CENTRAL ARTERY OF THE RETINA

Back 4

A. Ophthalmic artery

2. Central artery ofthe retina: arises as the ophthalmic artery emerges from
the optic canal; penetrates the meninges ofthe optic nerve, courses for-
ward in the center ofthe optic nerve and, upon entering the eye, sup-
plies the retina

Front 5

OPHTHALMIC ARTERY

LACRIMAL ARTERY

Back 5

A. Ophthalmic artery

3. Lacrimal artery: arises lateral to the optic nerve and ascends out ofthe
retrobulbar space to course with the lacrimal nerve; supplies the lacri-
mal gland and then gives rise to lateral palpebral arteries for the lateral
parts ofthe upper and lower eyelids

Front 6

OPHTHALMIC ARTERY

POSTERIOR CILIARY ARTERIES

Back 6

A. Ophthalmic artery

4. Posterior ciliary arteries: given off as the ophthalmic artery courses
medially, superior to the optic nerve; they enter the eye near the optic
nerve and, with the anterior ciliary arteries, supply most ofthe eye (an-
terior ciliary arteries enter the anterior part ofthe eye and are derived
from the variable muscular branches ofthe ophthalmic artery)

Front 7

OPHTHALMIC ARTERY

SUPRAORBITAL ARTERY

Back 7

A. Ophthalmic artery

5. Supraorbital artery: given off after the ophthalmic artery has passed
medially across the optic nerve; courses with the supraorbital nerve

Front 8

OPHTHALMIC ARTERY

ANTERIOR/POSTERIOR ETHMOIDAL ARTERIES

Back 8

6. Anterior and posterior ethmoidal arteries: given off as the ophthalmic
artery courses anteriorly between the superior oblique and medial rec-tus; they pass into the anterior and posterior ethmoidal foramina with
their respective nerves and supply the sphenoidal sinus, ethmoidal an
cells, and nasal cavity