THE ARTERIES. 445 



mesentery, and divides into branches which 

 supply the stomach, gizzard, and part of the 

 intestine, 

 ii. The anterior mesenteric artery is a median 

 vessel, which arises about a quarter of an inch 

 behind the ccsUac artery, and runs backwards 

 in the mesentery, dividing into branches 

 which supply the greater part of the length of 

 the intestine, 

 iii. The anterior renal arteries are a pair of small 

 vessels, which arise from the aorta opposite 

 the anterior ends of the kidneys, and supply 

 their anterior lobes. From the artery of the 

 left side a branch is given off to the ovary, 

 iv. The femoral arteries are paired, and arise 

 opposite the anterior lobes of the kidneys. 

 They pass outwards, dorsal to the kidneys, to 

 supply the extensor muscles of the thigh. 

 Each gives off a pubic artery, which runs 

 backwards along the ventral border of the 

 pubes. 

 v. The sciatic arteries are a pair of larger vessels 

 which arise opposite the middle lobes of the 

 kidneys : they pass outwards and backwards, 

 between the middle and posterior lobes of the 

 kidneys, and through the ilio-sciatic foramina, 

 to supply the flexor muscles of the thighs and 

 the muscles of the legs. 



Each sciatic artery gives off a middle 

 renal artery to the middle lobe of the kidney 

 and a posterior renal artery to the posterior 

 lobe. 

 vi. The posterior mesenteric artery is a median 

 vessel, which arises opposite the hinder ends 

 of thejkidneys, and supplies the rectum and 

 cloaca, 

 vii. The internal iliac arteries are a pair of vessels 



