- Consist of deep and superficial groups
- Devoid of valves.
- Superficial veins draining the cortex and subcortical white mater empty into the superior sagittal or basal sinuses.
- The deep cerebral veins, draining the choroid plexus, periventricular regions, diencephalon, basal ganglia, and deep white mater, empty into the internal cerebral and great cerebral veins.
- Numerous anastomotic channels interconnect deep and superficial veins