Arterial supply of the duodenum is by -
Upper part of duodenum (up to opening of bile duct) is derived from foregut and therefore is supplied by Coeliac trunk.
Lower part of duodenum (below the opening of bile duct) is derived from midgut and is supplied by superior mesenteric artery.
Superior mesenteric artery
Celiac artery
Inferior mesenteric artery
Both superior mesenteric & celiac arteries