Straight sinus

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Straight sinus
Gray488 blue.gif
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.)
Details
Latin sinus rectus
Source
inferior sagittal sinus, great cerebral vein
Drains to
confluence of sinuses
Identifiers
Gray's p.655
MeSH A07.231.908.224
Dorlands
/Elsevier
s_12/12739157
TA A12.3.05.112
FMA FMA:50769
Anatomical terminology

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.