It is located in the mesoappendix and accompanies the appendicular artery.

The appendicular artery, a branch of the ileocolic artery.

It encloses the appendicular artery and vein, as well as lymphatic vessels, nerves, and often a lymph node.

Dr. Sheshachalam : Former professor of surgery who discovered the accessory appendicular artery of Sheshachalam.

The appendicular artery (appendiceal artery) is a terminal branch of the ileocolic artery that descends behind the termination of the ileum and enters the mesoappendix of the vermiform appendix.

The ileocolic artery of the superior mesenteric artery branches off into the ascending colic artery, the anterior and posterior cecal arteries, the appendicular artery, and the ileal branches.

It passes downward and to the right behind the peritoneum toward the right iliac fossa, where it divides into a superior and an inferior branch; the inferior gives rise to the appendicular artery and anastomoses with the end of the superior mesenteric artery, the superior with the right colic artery.