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inferior orbital fissure |
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inferior orbital fissure, a groove in the inferolateral wall of the orbit that contains the infraorbital and zygomatic nerves and the infraorbital vessels. fissure, n a deep groove or cleft; commonly the result of the imperfect fusion of the enamel or adjoining dental lobes. fissure, gingival, n See cleft, gingival. fissure, inferior orbital, n the opening between the maxilla and the greater wing of the sphenoid bone through which the inferior ophthalmic vein, infraorbital artery, and infraorbital and zygomatic nerves travel. fissure, pterygomaxillary n the most posterior point in the anterior contour of the maxillary tuberosity. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The maxillary division of the Vth cranial nerve exits the superior maxillary foramen and enters the orbit via the inferior orbital fissure. 6) The inferior ophthalmic vein passes through the inferior orbital fissure under the optic nerve and communicates with the pterygoid plexus; there it either joins the superior ophthalmic vein or empties into the cavernous sinus. Intraorbital tumor involvement can occur as a result of extension to the inferior orbital fissure. |
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