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Cardiovascular System

Straight Sinus

Sinus rectus

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Quick Facts

Origin: Continuation of the inferior sagittal sinus.

Course: Runs posteriorly at the junction of falx cerebrum and tentorium cerebellum, from the great cerebral vein of Galen to the confluence of sinuses.

Tributaries: Great cerebral vein of Galen and superior cerebellar veins.

Drainage: Deeper aspects of the cerebral hemispheres.

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Origin

The straight sinus is a dural venous sinus that occupies the posterior portion of the falx cerebri and runs posteroinferiorly as a continuation of the inferior sagittal sinus.

Course

The straight sinus runs posteriorly and increases in size as it travels inside the dural space situated at the junction of falx cerebrum and tentorium cerebellum. It commences anteriorly where the great cerebral vein of Galen joins with the inferior sagittal sinus. Posteriorly, it ends by pouring the venous blood into the confluence of sinuses at the internal occipital protuberance.

Tributaries

Tributaries of the straight sinus include the great cerebral vein of Galen and superior cerebellar veins.

Structures Drained

The straight sinus drains the deeper aspects of the cerebral hemispheres.

Learn more about this topic from other Elsevier products

Straight Sinus

ScienceDirect image

A patent straight sinus requires vein of Galen preservation and clip application to occlude just the tributary vein draining the fistula, rather than the Galen trunk.

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Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy