Straight sinus

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Vein: Straight sinus
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Dural veins (Straight sinus labeled as 'SIN. RECTUS' at center right.)
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Dura mater and its processes exposed by removing part of the right half of the skull, and the brain. (Straight sinus visible as blue line at center left.)
Latin sinus rectus
Gray's p.655
Source inferior sagittal sinus, great cerebral vein
Drains to confluence of sinuses
MeSH Cranial+Sinuses

The straight sinus, also known as tentorial sinus or the sinus rectus, is an area within the skull beneath the brain that receives venous blood. The straight sinus receives blood from the superior cerebellar veins and inferior sagittal sinus and drains into the confluence of sinuses.

Structure[edit]

The straight sinus is situated within the dura mater, where the falx cerebri meets the midline of tentorium cerebelli. [1]:795 In cross-section it is triangular, contains a few transverse bands across its interior, and increases in size as it proceeds backward.[citation needed]

Function[edit]

It forms from the confluence of the inferior sagittal sinus and great cerebral vein.

The straight sinus is an unpaired area beneath the brain which allows blood to drain from the inferior center of the head outwards posteriorly. It receives blood from the inferior sagittal sinus, great cerebral vein, posterior cerebral veins, superior cerebellar veins and veins from the falx cerebri. [1] :795

Additional images[edit]

See also[edit]

This article uses anatomical terminology; for an overview, see anatomical terminology.

References[edit]

  1. ^ a b Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students (Pbk. ed.). Philadelphia: Elsevier/Churchill Livingstone. ISBN 978-0-443-06612-2. 

External links[edit]


This article incorporates text from a public domain edition of Gray's Anatomy.