text: 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.
option_0: Circle of Willis
option_1: Suprarenal veins
option_2: Vitelline arteries
option_3: Cardiac veins
option_4: Kiesselbach's plexus
option_5: Vitelline veins
option_6: Cloaca 
option_7: Urachus