This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Which of the following is not supplied by Superior mesenteric aery: 
Select and explain. 
A. Jejunum, B. Appendix, C. Ascending colon, D. Descending colon
D: Descending colon
Answer: D: Descending colon 
Explanation: The superior mesenteric aery (SMA) arises from the anterior surface of abdominal aoa, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower pa of the duodenum to the left colic flexure and the pancreas.Branches of SMAIntestinal aeries (arcades -- vasa recta--straight aeries) gives branches to ileum, branches to jejunum-(terminal branch of the SMA) supplies last pa of ileum, cecum, and appendixIleocolic aeryappendicular aeryRight Colic aery supplies ascending colon.Middle Colic aery supplies the transverse colon.Inferior pancreaticoduodenal aery supplies head of the pancreas and to the descending and inferior pas of the duodenum