The<unk>  (left and right lateral<unk> , within the human head, are two areas beneath the brain which allow blood to drain from the back of the head. They run laterally in a groove along the interior surface of the occipital bone. They drain from the confluence of<unk>  (by the internal occipital protuberance) to the sigmoid<unk> , which ultimately connect to the internal jugular vein. See diagram (at right): labeled under the brain as "" (for Latin: sinus<unk> s).
Transverse sinuses
Superior sagittal sinus
Inferior sagittal sinus
Canine fossa
Collateral fissure
Suboccipital triangle
Rhomboid fossa
Optic recess