Midgut

The midgut is the portion of the human embryo from which almost all of the small intestine and approximately half of the large intestine develop. After it bends around the superior mesenteric artery, it is called the "midgut loop". It comprises the portion of the alimentary canal from the end of the foregut at the opening of the bile duct to the hindgut, about two-thirds of the way through the transverse colon. In addition to representing an important distinction in embryologic development, the tissues derived from the midgut additionally have distinct vascular supply and innervation patterns in the adult gastrointestinal system.