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The sinuses at the base of the skull. (Sphenoparietal sinus labeled at upper right.)
|Drains from||superficial middle cerebral vein (by tradition)|
|Source||diploic veins, meningeal veins|
|Drains to||cavernous sinus|
The cavernous sinus receives the superior ophthalmic vein through the superior orbital fissure, some of the cerebral veins, and also the small sphenoparietal sinus, which courses along the under surface of the small wing of the sphenoid.