GAS1 Lab 7: Small and Large Intestine

Small and Large Intestine - Page 3 of 7

Remember that the midgut rotates around the superior mesenteric artery and the organs supplied by this artery are intra-peritoneal.

	Add the jejunal arteries.
	Add the duodenojejunal flexure which is the point where the duodenum connects with the intra-peritoneal jejunum.
	Add in the jejunum.
	Add the ileal arteries.
	Now, add the ileum.
	Add the ileocolic artery.

	The ileocolic artery is the watershed area of the superior mesenteric artery. In premature infants, this is the area that is most effected by poor perfusion during hypoxic events. What would happen to the bowel in this area?
The bowel can become necrotic and die. Surgery to remove this bowel would include the removal of the terminal ileum and half of the colon.