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(Redirected from Cerebral sinus)
Venous channels in the dura mater
Blood vessel
The major dural venous sinuses included the superior sagittal sinus, inferior sagittal sinus, transverse sinus, straight sinus, sigmoid sinus and cavernous sinus. These sinuses play a crucial role in cerebral venous drainage. A dural venous sinus, in human anatomy, is any of the channels of a branching complex sinus network that lies between layers of the dura mater, the outermost covering of the brain, and functions to collect oxygen-depleted blood. Unlike veins, these sinuses possess no muscular coat.
The walls of the dural venous sinuses are composed of dura mater lined with endothelium, a specialized layer of flattened cells found in blood and lymph 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. They also lack valves (in veins; with exception of materno-fetal blood circulation i.e. placental artery and pulmonary arteries both of which carry deoxygenated blood).
Illustration of the dural venous sinuses
Dural venous sinuses
Dural veins
Sagittal section of the skull, showing the sinuses of the dura.
Dura mater and its processes exposed by removing part of the right half of the skull, and the brain.
The sinuses at the base of the skull.
Major sinuses and their tributaries
