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Lateral boundary of the Orbit
Lateral Wall by
1) Frontal process of Zygomatic Bone
2) Greater Wing of Sphenoid
Roof boundary of the orbit
Roof by
1) Orbital plate of Frontal bone
2) Lesser wing of Sphenoid bone
Medial boundary of the orbit
Medial wall by
1) Maxilla
2) Lacrimal bone
3) Ethmoid bone
4) Body of the Sphenoid
Floor boundary of the orbit
Floor by:
1) Orbital process of palatine
2) Maxilla (orbital surface)
3) Zygomatic bone
Contents of the orbit
1) Eyeball
2) Orbital and Bulbar fascia
3) Muscles
4) Vessels
5) Nerves
6) Lacrimal Gland
7) Fat
Two groups of muscles of the eye
A) Voluntary
B) Involuntary
Voluntary Muscles of the Eye
(7 muscles in each eye)
A) Four recti
1) Superior, 2) Inferior, 3) Lateral, 4) Medial
B) Two Oblique
1) Superior Oblique, 2) Inferior Oblique
C) One levator
1) Lavetor Palpebrae superioris
Extra Ocular Muscles of the eye
Four recti (Superior, Inferior, Lateral, Medial)
Two Oblique (Superior Oblique, Inferior Oblique)
Involuntary muscles of the eye
(3 muscles in each eye)
1) Superior Tarsal
2) Inferior Tarsal
3) Orbitalis
Vessels in the orbit
1) Opthalmic artery
2) Superior and Inferior Opthalmic Veins
3) Lymphatics
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