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The straight sinus (also known by the alternate anatomical term tentorial sinus), within the human head, is an area beneath the brain, which allows blood veins to span the area, from the center of the head towards the back. It drains from the inferior sagittal sinus (from the center of the brain) to the transverse sinuses (at the back of the head), then to the sigmoid sinuses below the brain. See diagram (at right): labeled in the brain as "SIN. RECTUS" (for Latin: sinus rectus).
Additional recommended knowledge
The straight sinus (tentorial sinus) is situated along the junction of the falx cerebri and the tentorium cerebelli.
It forms from the confluence of the inferior sagittal sinus and great cerebral vein (great vein of Galen). In cross-section it is triangular, contains a few transverse bands across its interior, and increases in size as it proceeds backward. It receives the superior cerebellar veins.
The terminal part of the straight sinus drains into the confluence of the sinuses.
Categories: Head and neck | Cardiovascular system
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Straight_sinus". A list of authors is available in Wikipedia.|