Venous drainage

• The dural sinuses lie between the periosteal and menigeal layers of the dura matter
• The superficial sagital sinus is the most superior and lies in a sagital plane across the cerebral hemispheres
• The inferior sagital sinus lies inferior to superior sagital sinus and drains into the straight sinus
• The superior and inferior sagital sinuses and the straight sinus drain into the confluence of sinuses
• Transverse sinuses extend laterally from the confluence of sinuses
• The transverse sinuses drain into the sigmoid sinuses
• The sigmoid sinuses pass through the jugular foramen to drain into the internal jugular vein
• Occipital sinuse extends from the foramen magnum
• The cavernous isnus is compromised of many veins and sits most anterior
• The confluence of sinuses sits posterior and inferior in the occipital lobe
• The opthalmic veins drain into the cavernous sinus
• Sphenocavernous sinus drains into the cavernous sinus