432 



EXTERNAL ILIAC ARTERY. 



Relation to Vciuxj tOo. The external iliac vein lies at first behind the 

 artery with an inclination to the inner side ; bat, as both vessels approach 

 Poupart'a ligament at the fore part of the pelvis, the vein is on the same 

 plane with the artery and quite to the inner side, being borue forwards by 

 the bone. At a short distance from its lower end the artery is crossed by 

 the circumflex iliac vein. 



Fig. 296. VIEW OF THE DISTRIBUTION 

 AND ANASTOMOSIS OF TUB EPIGASTRIC 

 AND INTKHNAL MAMMARY ARTEKIKS 

 (from Ticdeinann). | 



For the detailed description of this 

 figure, see Fig. 265, p. b75. 



7, placed on the transversalis muscle 

 above the internal inguinal aperture, points 

 to the last part of the external iliac artery 

 at the place where it gives origin to 8, the 

 epigastric and 9, the circumflex iliac ar- 

 tery: 10, anastomosis of the epigastric 

 artery and the abdominal branch of the in- 

 ternal mammary in and behind the rectos 

 muscle; 11, the spermatic cord receiving 

 the external spermatic branch from the 

 epigastric artery ; 12, femoral artery ; 13, 

 femoral vein ; 14, a lymphatic gland 

 closing the femoral ring. 



Lrtrge lymphatic glands are found 

 resting upon the front and inner side 

 of the vessel ; and the spermatic 

 vessels descend upon it near its ter- 

 mination. A branch of the yenito- 

 crural nerve crosses it just above 

 Pou part's ligament. 



BRANCHES. The external iliac 

 artery supplies some small branches 

 to the psoas mucle and the neigh- 

 bouring lymphatic glands, and, close 

 to its termination, two other branches 

 of considerable size, named the epi- 

 gastric and the circumflex iliac, which 

 are distributed to the walls of the 

 abdomen. 



1. THE EPIGASTRIC ARTERY (in- 

 ferior epigastric) arises from the fore- 

 part of the external iliac artery, 

 usually a few lines above Poupart's 

 ligament. It, first inclines down- 

 wards, FO as to get on a level with 

 the ligament, and then passes ob- 

 liquely upwards and inwards between 

 the fascia transversalis and the 

 peritoneum, to reach the rectus 

 muscle of the abdomen. It ascends 

 almost vertically behind the rectus, 



