ANGEIOLOGY. 93 



I 1. The ilio-lumhar. This arises from the back part of the internal iliac 

 and passes into the substance of the iliacus internus, in which it divides into 

 ascending and descending brandies. 2. The lateral sacral descends obliquely 

 in front of the sacral holes, and sends branches to the spinal nerves and to 

 the pyriform muscle. 2. The hemorrhoidal. These are two or three 

 branches of uncertain origin, which pass to the sides of the rectum and 

 communicate with the superior and inferior hnemorrhoidal arteries. 4. The 

 vesical arteries; these arise from the iliac or some of its branches, and 

 ramify on the coats of the bladdei-. 5. The uterine and vaginal arteries, 

 arising from the internal iliac or from some of its branches. 6. The glutceal 

 artery passes backwards and outwards from the pelvis by the upper part of 

 the sciatic notch, and divides into several branches, supplying the glutsei. 

 7. The obturator passes out from the pelvis into the upper part of the thigh, 

 and supplies the obturator and adductor muscles. 8. The sciatic artery 

 escapes from the pelvis through the sciatic notch, and supplies the glutaeus 

 maxinius, the hamstrings, and the adductor magnus. 9. The iyUernal pudic 

 leaves the pelvis and re-enters it again betweeti the sciatic ligaments; 

 ascending, it divides into two branches a little below the symphysis pubis. 

 On re-entering the pelvis, it gives off: a, the external hcumorrhoidal arteries 

 to the sides of the rectum and anus ; h, the perinmal artery to the perinreum 

 and scrotum ; c, transversalis perincei; d, artery of the bulb to the corpus 

 spongiosum urethras ; e, and f, artery of the corpus cavernosum and dorsalü 

 2)enis. 



Fl. 134, Jig. 4", middle sacral artery; ", division of the abdominal 

 aorta into the two iliac arteries; '\ division of the iliac arteries into 

 the external and internal iliac arteries ; '^ ilio-lumbar ; '", inferior epigas- 

 tric. 



PL 1S5, fig. 13', end of the abdominal aorta; ', middle sacral ; % a lum- 

 bar artery ; \ common iliac artery ; ^, femoral or external iliac artery ; 

 °, circumflex ilii ; ', inferior epigastric ; ", umbilical artery ; °, obturator ; 

 '*, vesical ; ", ilio-lumbar ; ''^''^j lateral sacral; ", superior gl utseal. Fig. 14, 

 obturator artery, and its division into an anterior and a posterior branch in 

 the upper part of the thigh. 



2. The External Iliac Artery proceeds from the common iliac, down- 

 wards and outwards to Povipart's ligament, beneath which it passes, and 

 then receives the name of femoral. Near the arroin it 2fives off two branches : 

 1. Circumflex ilii, which, ai'ising from its outer side, ascends obliquely out- 

 wards as far as the crest of the ilium, where it branches to go to the abdo- 

 minal muscles, and to the iliacus internus and quadi-atus lumborum ; 2. The 

 epigastric artery, which arises from the fore part, a little above Poupart's 

 ligament, and, first descending, ascends between the abdominal muscles and 

 the peritonaeum, ultimately reaching the rectus muscle, the umbilicus, and 

 the internal mammary artery. 



3. The Femoral Artery, the continuation of the external iliac, descends 

 from the middle of the crural arch, along the anterior and internal part of 

 the thigh. It sends off — 



o. Some suporficial branches, as the inguinal, to the inguinal glands; the 



790 



