<prompt> Deep venous system of brain consist ofSuperior sagittal sinus with straight sinusInf. Sagittal sinus with straight sinusInternal cerebral veinsBasilar vein  <response>: It is single median vein formed by union of 2 internal cerebral vein. along with inferior petrosal sinus terminate in straight sinus. Its tributaries are basal vein, veins from pineal body, colliculus, cerebellum occipital lobes. Ref: Grays 40ep256 