Dural venous sinuses
|Dural venous sinuses|
Sagittal section of the skull, showing the sinuses of the dura.
|Latin||Sinus durae matris|
The dural venous sinuses (also called dural sinuses, cerebral sinuses, or cranial sinuses) are venous channels found between layers of dura mater in the brain. They receive blood from internal and external veins of the brain, receive cerebrospinal fluid (CSF) from the subarachnoid space, and ultimately empty into the internal jugular vein.
|Inferior sagittal sinus||Straight sinus|
|Superior sagittal sinus||Typically becomes right transverse sinus or confluence of sinuses|
|Straight sinus||Typically becomes left transverse sinus or confluence of sinuses|
|Occipital sinus||Confluence of sinuses|
|Confluence of sinuses||Right and Left transverse sinuses|
|Sphenoparietal sinuses||Cavernous sinuses|
|Cavernous sinuses||Superior and inferior petrosal sinuses|
|Superior petrosal sinus||Transverse sinuses|
|Transverse sinuses||Sigmoid sinus|
|Inferior petrosal sinus||Internal jugular vein|
|Sigmoid sinuses||Internal jugular vein|
The walls of the dural venous sinuses are composed of dura mater lined with endothelium, a specialized layer of flattened cells found in blood vessels. They differ from other blood vessels in that they lack a full set of vessel layers (e.g. tunica media) characteristic of arteries and veins. It also lacks valves as seen in veins.
The sinuses can be injured by trauma. Damage to the dura mater, which may be caused by skull fracture, may result in blood clot formation (thrombosis) within the dural sinuses. While rare, dural sinus thrombosis may lead to hemorrhagic infarction with serious consequences including epilepsy, neurological deficits, or death.
- Kiernan, John A. (2005). Barr's The Human Nervous System: An Anatomical Viewpoint. Lippincott Williams & Wilkins. pp. 428–230. ISBN 0-7817-5154-3.
- de Bruijn SF, Stam J (1999). "Randomized, placebo-controlled trial of anticoagulant treatment with low-molecular-weight heparin for cerebral sinus thrombosis". Stroke 30 (3): 484–8. doi:10.1161/01.str.30.3.484. PMID 10066840.