orbit (anatomy) - Hutchinson encyclopedia article about orbit (anatomy) Printer Friendly
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orbit (anatomy)

   Also found in: Medical, Wikipedia 0.12 sec.

orbit

In mammals, one of two bony cavities on either side of the nose in which the eyes are situated. They protect the eyes from injury because of the thickness of the bone at the front of the orbit.

The optic canal, which is the route between the optic nerve and the brain, opens into the rear of the orbits and nerves and blood vessels pass through the optical fissures. The eyes are held within the orbits by the extra-ocular muscles and the orbital septum.
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