Editing Small intestine (section)

===Blood supply===
The small intestine receives a blood supply from the [[celiac trunk]] and the [[superior mesenteric artery]]. These are both branches of the [[aorta]]. The duodenum receives blood from the celiac trunk via the [[superior pancreaticoduodenal artery]] and from the superior mesenteric artery via the [[inferior pancreaticoduodenal artery]]. These two arteries both have [[anterior and posterior]] branches that meet in the midline and [[Anastomosis|anastomose]].  The jejunum and ileum receive blood from the superior mesenteric artery.<ref name=GRAYS2005B>{{cite book|last=Drake|first=Richard L.|title=Gray's anatomy for students|year=2005|publisher=Elsevier/Churchill Livingstone|location=Philadelphia|isbn=978-0-8089-2306-0|author2=Vogl, Wayne |author3=Tibbitts, Adam W.M. Mitchell  |author4=illustrations by Richard |author5= Richardson, Paul |pages=295–299}}</ref> Branches of the superior mesenteric artery form a series of arches within the mesentery known as [[arterial arcades]], which may be several layers deep. Straight blood vessels known as [[Vasa recta (intestines)|vasa recta]] travel from the arcades closest to the ileum and jejunum to the organs themselves.<ref name=GRAYS2005B />