Sphenoid bone. Upper surface. (Optic foramen is labeled at center left.)
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| colspan="2" |Base of the skull. Upper surface. (On the left, "Optic foramen" is the 12th label from the top.
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|Latin
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|colspan="2"|[subject #35 ]
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|System
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|Precursor
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|MeSH
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|Dorlands/Elsevier
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The superior surface of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove), above and behind which lies the optic chiasma; the groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery into the orbital cavity.
The optic foramen is the opening to the optic canal.
