THE EXTERNAL ILIAC ARTERY. 



451 



forwards by the bone. At a short distance 

 artery is crossed by the circumflex iliac vein. 



from its lower end the 



Pig. 289. — View of the Distribution Fie;. 2S9 



AND Anastomosis of the Deep Epi- 

 gastric AND Internal Mammary Ar- 

 teries (from Tiedemann), ^ 



For tlie detailed description of this 

 figure, see p. 390. 



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 rectus 

 muscle ; 11, the spermatic cord receiving 

 the cremasteric branch from the epigastric 

 artery; 12, femoral ailery ; 13, femoral 

 vein ; 14, a lymphatic gland closing the 

 femoral ring. 



Large lymphaUc glands are found 

 resting upon the front and inner 

 side of the vessel ; and the sper- 

 matic vessels descend upon it 

 near its termination. A branch 

 of the genito-crural nerve crosses 

 it just above Poupart's ligament. 



Beanches. — The external iliac 

 artery supplies some small branches 

 to the psoas muscle and the neigh- 

 bouring lymphatic glands, and, 

 close to its termination, two other 

 branches of considerable size, 

 named the epigastric and the 

 circumflex iliac, which are dis- 

 tributed to the walls of the 

 abdomen. 



1. The deep epigastric ar- 

 tery (inferior epigastric) arises 

 from the fore part of the external 

 iliac artery, usually a few lines 

 above Poupart's ligament. It 

 first inclines downwards, so as to 

 get on a level with the ligament, 

 and then passes obliquely 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, and rismg 

 within the sheath is placed between it and the muscle, and terminates 

 It some distance above the umbilicus in offsets which ramify in the 

 substance of the muscle and anastomose with the terminal branches of 

 the internal mammary and inferior intercostal arteries. 



G G 2 ■ 



