The<unk>  (also known as<unk>  longitudinal sinus), within the human head, is an area beneath the brain which allows blood to drain outwards posteriorly from the center of the head. It drains (from the center of the brain) to the straight sinus (at the back of the head), which connects to the transverse sinuses. See diagram (at right): labeled in the brain as "" (for Latin: sinus sagittalis<unk> . The<unk>  courses along the<unk>  border of the falx cerebri, superior to the corpus callosum. It receives blood from the deep and medial aspects of the cerebral hemispheres and drains into the straight sinus.
Inferior sagittal sinus
Superior sagittal sinus
Transverse sinuses
Collateral fissure
Canine fossa
Rhomboid fossa
Optic recess
Lacrimal groove