548 



BLOOD-VESSELS OF THE ABDOMEX. 



and Gimbernaut's ligaments and above, by the fleshy mar- 

 gin of the transverse muscle. 



BLOOD-VESSELS OF THE ANTERIOR AND LATERAL WALLS. 



The arteries are external and internal. The former arise 

 from the femoral artery, ascend over Poupart's ligament, 



and consist of the ex- 

 ternal or superficial 

 circumflexa ilii, ex- 

 ternal epigastric, and 

 external pudic, pro- 

 ceeding between the 

 skin and superficial 

 fascia, to be distrib- 

 uted about the spinous 

 process of the ilium, 

 the umbilicus, and pu- 

 bis. The internal or 

 deep arteries have the 

 same name, the prin- 

 cipal of which are the 

 circumflexa ilii proper, 

 and internal epigastric, 

 both of which come 

 from the external iliac 

 just as the latter is passing under Poupart's ligament. 

 The latter ascends on the pubic side of the internal ring, 

 between the fascia transversalis and peritoneum, to the 

 rectus muscle, upon which it ramifies and ascends to anas- 

 tomose with the internal mammary, which descends from 



FIG. 171 represents an internal view of the Anterior Abdominal Wall, 

 with its Blood-vessels. 1 1 Linea alba. 2 2 Linea semilunaris. 3 3 Lineoe 

 transversae. 4 Lower border of sheath of rectus. 5 6 Rectus abdominis. 

 7 Internal mammary artery. 8 Musculo-phrenic branch. 9 9 Diaphragm. 

 11 Section of the three abdominal muscles. 12 Section of external and inter- 

 nal oblique. 13 External iliac artery. 14 Circumflexa ilii artery. 15 Ex- 

 ternal iliac vein. 16 Crural ring. 17 Gimbernat's ligament. 19 20 Arch 

 formed by the lower border of internal oblique, and transversalis muscle. 22 

 Conjoined tendon of internal oblique and transversalis. 



