DESCRIPTION OF THE ARTERIES 205 



II. The superior mesenteric supplies the small intes- 

 tine except the first part of the duodenum, as well as 

 the cecum, appendix, ileum, and ascending and trans- 

 verse colon. Emerging from between the transverse 

 duodenum and pancreas, it crosses the former, and 

 descends in the mesentery to the right iliac fossa with 

 its veins and a plexus of nerves. It ends by anasto- 

 mosing with its own ileocolic branch. (See Fig. 83.) 



III. The inferior mesenteric supplies the descending 

 colon, sigmoid flexure, and upper part of the rectum, 

 and its continuation. (See Fig. 83.) 



IV. The suprarenals, to the under surface of the 

 suprarenal capsules, join branches of the phrenic and 

 renal arteries. 



V. The renal, to the hilum of the kidney, enters by 

 four or five branches, into which each vessel divides 

 close to the kidney. 



VI. The spermatic, the ovarian in the female, to 

 the testicles or ovaries respectively. 



The Iliac Arteries. The common iliac arteries run 

 downward and outward from the division of the 

 aorta to the lumbosacral joint, and divide into the 

 external and internal iliacs. (See Fig. 81, page 201.) 



The internal iliac artery descends to the upper part 

 of the great sacrosciatic foramen, and divides into an 

 anterior and a posterior trunk. 



The posterior trunk gives off the following branches: 

 (a) the iliolumbar; (6) the lateral sacral; (c) the gluteal, 

 passes through the great sciatic foramen, and divide 

 into a superficial and a deep branch. 



The anterior trunk of the internal iliac gives off the 

 following branches: 



(a) The superior vesical represents the pervious part 

 of the fetal hypogastric artery. It runs to the apex 

 and body of the bladder and to the ureter, joins its 

 fellow, and gives off the artery of the vas deferens, 

 which accompanies that structure to the testicle. It 



