This document contains unlabeled diagrams of the structures of the eye and orbit. It shows the nerves, arteries, muscles and other anatomical features. Key structures highlighted include the lacrimal gland, extraocular muscles, cranial nerves III, IV and VI, branches of the trigeminal nerve and vessels such as the ophthalmic artery. Accompanying text provides some labeling guidance and notes on related structures like the carotid sinus.
5. Superciliary arch
Supraorbital notch
Supraorbital margin
Greater wing of Sph
Orbital plate of Zygo
Orbital plate of Max
Infraorbital Foramen
Nasolacrimal
canal
Fossa for
Lacrimal Sac
Orbital plate of Eth
Infraorbital
groove (and
nerve)
Optic canal
(and nerve)
Lesser wing of Sph
superior orbital fissure
inferior orbital fissure
To
29nA
6. Medial rectus
Lacrimal sac
Inferior rectus
Inferior oblique
Lateral rectus
Superior rectus
Back of lacrimal
gland
Levator palpebrae superioris
I
10. Nasociliary nerve
Long Ciliary N.
Short Post. Ciliary A.
Optic nerve
Long Post.
Ciliary A.
Short Ciliary N.
Oculomotor CN 3
(inferior division)
Oculomotor (sup division)
Ciliary ganglion
Nasociliary nerve
Post Ethmoidal N.
and A.
Opthalmic A.
I
If
11. Trochlear nerve
Post. Ethmoidal
N.
Short cilia
nerve
Opthalmic Artery
Nasociliary nerve
Lacrimal Artery ?
Cavernous sinus
Central Artery of Retina
Inf. division of
oculomotor N.
Sympathetic to Ciliary
5
so
13. Short ciliary
nerve
Long ciliary
artery (pretend
its continuous)
Anterior ciliary artery
Long ciliary
nerve
Short ciliary
artery
Major arterial
circle of the iris
Minor arterial circle
of the iris (not pictured)
F
For 200
20. Cribriform Plate
Frontal N.
Trochlear N.
Supratrochlear N.
Lacrimal Nerve
Middle Cerebral Artery
Optic Chiasm
Anterior
meningeal Artery
Medial
supraorbital Nerve
Lateral
supraorbital nerve
Lo
JIT
21. Zygomatic
branch of V2
Maxillary branch
Anterior superior alveolar
branch of V2
middle superior
alveolar branch of V2
Pterygopalatine Ganglion
Nerve to tensor tympani
and lessor petrosal N.
Nerve of pterygoid canal
I
Begg
27. UNLABELED NOTES
• Vagus runs along internal and common carotid artery
• Carotid sinus is arterial tissue, carotid body is nervous tissue
(peach/salmon in color)
• Chorda tympani is visible, facial nerve is disconnected after facial canal
(but visible)
• To identify the lacrimal nerve, look for the weird sideways nerve
(Zygomaticotemporal) running from the lacrimal gland and around the
eyeball