ANGEIOLOGY. 93 
1. The lio-lumbar. 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 branches. 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 hemorrhoidal arteries. 4. The 
vesical arteries; these arise from the iliac or some of its branches, and 
ramify on the coats of the bladder. 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 glutei. 
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 gluteus 
maximus, the hamstrings, and the adductor magnus. 9. The znternal pudic 
leaves the pelvis and re-enters it again between the sciatic lgaments; 
ascending, it divides into two branches a little below the symphysis pubis. 
‘On re-entering the pelvis, it gives off: a, the external hemorrhoidal arteries 
_to the sides of the rectum.and anus; 0, the perineal artery to the perinzeum 
and scrotum; ¢, transversalis periner; d, artery of the bulb to the corpus 
spongiosum urethre; e, and / artery of the corpus cavernosum and. dorsalis 
penis. 
Pl. 184, jig. 4", middle sacral artery; “, divjsion 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. 135, fig. 18°, end of the abdominal aorta; *, middle sacral; *, a lum- 
bar artery; *, common iliac artery; *°, femoral or external iliac artery ; 
*, circumflex ili; ’, inferior epigastric; *, umbilical artery ; °, obturator ; 
*, vesical; ", ilio-lumbar; ™”, lateral sacral; “, superior gluteal. Sig. 14, 
obturator artery, and its division into an anterior and a posterior branch in 
the upper part of the thigh. 
2. ‘THE EXTERNAL Iu1ac ARTERY procecds from the common iliac, down- 
wards and outwards to Poupart’s ligament, beneath which it passes, and 
then receives the name of femoral. Near the groin it gives off two branches: 
1. Circumflex il, which, arising from its outer side, ascends obliquely out- 
wards as far as the crest of the illum, where it branches to go to the abdo- 
minal muscles, and to the iliacus internus and quadratus 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 peritonzum, 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— 
a. Some superficial branches, as the inguinal, to the inguinal glands; the 
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