The<unk>  (also called the cerebral arterial<unk>  or arterial<unk>  is a<unk>  of arteries that supply blood to the brain. It is named after Thomas<unk>  (1621-1673), an English physician.
Circle of Willis
Suprarenal veins
Vitelline arteries
Cardiac veins
Kiesselbach's plexus
Vitelline veins
Cloaca 
Urachus