ARTERIES. 



and to the right in this to the right iliac fossa. Branches. 

 Kami intestini tennis ; intestinal branches running in the mes- 

 entery; each divides and the branches unite to form arches 

 from which other branches arise; this process is kept up till 

 there are four or five tiers of arches. Inferior pancreatico- 

 duodenal; running between the duodenum and pancreas this 

 divides into branches which ascend in front of and behind the 

 pancreas. Middle colic ; running in the transverse mesocolon 

 this divides into two branches, right and left, which join, re- 

 spectively, the right and left colic. Right colic; running be- 

 hind the peritoneum toward the ascending colon this divides 

 into two branches, ascending and descending, which join the 

 middle colic and ileo-colic respectively. Ileo-colic ; running be- 

 hind the peritoneum toward the low r er end of the ascending 

 colon, this divides into two branches, ascending and descend- 

 ing, which join the right colic and ileo-caecal respectively. 

 Terminal; ileal, to the lower end of the small intestine; ap- 

 pendicular, running in the meso-appendix to the appendix ; an- 

 terior and posterior ileo-csecal, to the front and back of the ileo- 

 caecal junction; and colic, to the ascending colon. [845] 



The inferior mesenteric arises from the aorta below the pre- 

 ceding, descends to the left common iliac, and there becomes 

 the superior hemorrhoidal. Branches. Left colic; running 

 toward the splenic flexure this divides into ascending and de- 

 scending branches, which join the middle colic and sigmoid 

 respectively. Sigmoid; running toward the sigmoid flexure 

 this divides into ascending and descending branches, which 

 join the left colic and superior hemorrhoidal respectively. 

 Superior hemorrhoidal ; crossing over the left common iliac, 

 this descends in the pelvis to the third sacral vertebra and di- 

 vides into two branches, which descend on either side of the 

 rectum. [847] 



Common Iliac. Beginning at the middle of the body of the 

 fourth lumbar vertebra, just to the left of the midline, each 

 runs downward and outward on the spine and becomes the 

 14 [ 209 ] 



