part of part of connecting branch of vessel supplies blood to system vermiform appendix ileocolic artery artery appendicular artery UBERON:0039215 appendiceal artery FMA:14818 An artery that commonly arises from the terminal branch of the ileocolic artery, or less commonly from the posterior cecal artery or an ileal artery.[1][2] It descends behind the termination of the ileum and enters the mesoappendix of the vermiform appendix. It runs near the free margin of the mesoappendix and ends in branches which supply the appendix.