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Straight sinus

The straight sinus (also tentorial sinus; Latin: sinus rectus) is an unpaired dural venous sinus that lies in the junction between the falx cerebri and the tentorium cerebelli.

This sinus extends from the junction posteroinferiorly to the confluence of sinuses.

The main tributaries of the straight sinus are the great cerebral vein and the superior cerebellar veins.