Dural venous sinuses
The dural venous sinuses are venous channels found between the endosteal and meningeal layers of dura mater in the brain. They receive blood from the cerebral veins, receive cerebrospinal fluid from the subarachnoid space via arachnoid granulations, and mainly empty into the internal jugular vein.Venous sinuses
Structure
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 characteristic of arteries and veins. It also lacks valves.The sinuses can be injured by trauma in which damage to the dura mater, may result in blood clot formation within the dural sinuses. Other common causes of dural sinus thrombosis include tracking of infection through the ophthalmic vein in orbital cellulitis. While rare, dural sinus thrombosis may lead to hemorrhagic infarction or cerebral oedema with serious consequences including epilepsy, neurological deficits, or death.Additional images
