greater pancreatic artery greater pancreatic artery in human anatomy, the greater pancreatic artery (great pancreatic artery or arteria pancreatica magna), is the largest artery that supplies the pancreas. it arises from the splenic artery. greater pancreatic arterybranches of the celiac arterydetailssourcesplenic arteryidentifierslatinarteria pancreatica magnata98a12.2.12.045ta24244fma14792anatomical terminology clinical relevance rarely, the greater pancreatic artery can rupture as a complication of chronic pancreatitis; this is often fatal.