paired venous dural sinus sphenoparietal 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. UBERON:0035338 NCIT:C33585 FMA:50776 SCTID:279266001 Wikipedia:Sphenoparietal_sinus UMLS:C0226866