Related Directory Categories
- Anatomy (44)
- Earth Orbit (20)
- Grey's Anatomy (14)
- Anatomie (12)
- Anatomie (10)
- ORBit (10)
- Anatomie (8)
- Anatomie (8)
- Orbital (8)
- Orbiter (8)
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Orbit (anatomy)
From Wikipedia, the free encyclopedia
(Redirected from Roof of orbit)
| Orbit (anatomy) | |
|---|---|
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| The seven bones which articulate to form the orbit. yellow = Frontal bone green = Lacrimal bone brown = Ethmoid bone blue = Zygomatic bone purple = Maxillary bone aqua = Palatine bone red = Sphenoid bone |
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| Gray's | subject #46 188 |
| MeSH | Orbit |
| Dorlands/Elsevier | o_05/12594914 |
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.
In the adult human, the volume of the orbit is 30 ml, of which the eye occupies 6.5 ml. [1]
Contents |
- Eyeball
- Fascias: Orbital, Bulbar
- Extraocular muscles
- Nerves: cranial nerves II, III, IV, V, and VI
- Blood vessels
- Fat
- Lacrimal gland
In humans, seven bones make up the bony orbit:
- Frontal bone (Pars orbitalis)
- Lacrimal bone
- Ethmoid bone (Lamina papyracea)
- Zygomatic bone (Orbital process of the the zygomatic bone)
- Maxillary bone (Orbital surface of the body of the maxilla)
- Palatine bone (Orbital process of palatine bone)
- Sphenoid bone (Greater and lesser wings)
- Optic foramen
- Superior orbital fissure
- Inferior orbital fissure
- Anterior ethmoid foramen
- Posterior ethmoidal foramen
- Infraorbital foramen
- Supraorbital foramen
- Naso-lacrimal canal opening
- Zygomatic orbital foramen
 The skull from the front. |
 Medial wall of left orbit. |
 Dissection showing origins of right ocular muscles, and nerves entering by the superior orbital fissure. |
 Coronal section of nasal cavities. |
 |
 Lateral orbit anatomy |
 Lateral orbit nerves |
 The orbit in relation to the other skull openings in the dinosaur Massospondylus. |
- ^ Duane's Ophthalmology, Chapter 32 Embryology and Anatomy of the Orbit and Lacrimal System . (eds Tasman W, Jaeger EA) Lippincott/Williams & Wilkins, 2007
- oph/2 at eMedicine - "Arterial Supply, Orbit"
- SUNY Labs 29:os-0501
- Atlas of anatomy at UMich eye_5
- Atlas of anatomy at UMich rsa2p4
- Interactive tutorial at anatome.ncl.ac.uk
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