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Orbit (anatomy)
The seven bones which articulate to form the orbit.
Latin	'
Gray's	subject #46 188
System
MeSH	A02.835.232.781.324.690
Medial wall of left orbit.

In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated.

It can also mean the skin which surrounds the eye of a bird.

ContentsEdit

• Extraocular muscles
• Nerves: cranial nerves II, III, IV, V, and VI
• Blood vessels
• Fat

BonesEdit

In humans, seven bones make up the bony orbit:

1. Frontal bone
2. Zygomatic bone
3. Maxillary bone
4. Sphenoid bone
5. Ethmoid bone
6. Palatine bone
7. Lacrimal bone

Foramina and openingsEdit

1. Optic foramen
2. Superior orbital fissure
3. Inferior orbital fissure
4. Anterior ethmoid foramen
5. Posterior ethmoidal foramen
6. Infraorbital foramen
7. Supraorbital foramen
8. Naso-lacrimal canal opening
9. Zygomatic orbital foramen

External linksEdit

• eMedicine oph/2 - "Arterial Supply, Orbit"
• SUNY Labs 29:os-0501
• Interactive tutorial at anatome.ncl.ac.uk
• Diagram at umich.edu

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