COMMON ILIAC AllTERIES. 



419 



vertebra, lies to the inner side of, and below the left artery. On the right 

 side there are three veins in proximity to the artery ; the right iliac vein 

 lying behind the lower part of the vessel, the left iliac vein crossing behind 

 it, and the vena cava resulting from the union of the two others being on 

 the right side of the artery at the upper end. 



PECULIARITIES. The place of origin of the common iliac arteries coincides with 

 that of the bifurcation of the aorta (p. 406). 



Fig. 288. VIEW OP Fj g . 288. 



THE RIGHT SIDE OP 

 A MALE PELVIS DIS- 

 SECTED TO SHOW 



THE EXTERNAL AND 

 INTERNAL ILIAC AR- 

 TERIKS AND THEIR 

 BRANCHES. g 



The viscera of the 

 pelvis have been re- 

 moved as well as the 

 internal iliac veins: the 

 larger nerves have been 

 retained, a, body of 

 the fifth lumbar ver- 

 tebra ; b, anterior and 

 superior spine of the 

 right ilium ; c, left 

 auricular surface of 

 the sacrum ; c', third 

 piece of the sacrum ; 

 d, first piece of the 

 coccyx ; e, short sacro- 

 sciatic ligament ; f, 

 tuberosity of the is- 

 chium covered inter- 

 nally by the great 

 sacro- sciatic ligament ; 

 f/, obturator foramen ; 

 ij iliacus muscle ; 1, 

 lower part of the ab- 

 dominal aorta ; 1', 

 middle sacral artery ; 

 2, 2, common iliac ar- 

 teries ; 2', right exter- 

 nal iliac ; 3, lower 

 part of the vena cava 



inferior ; 4, 4, common iliac veins ; the number on the right points by a line to the right 

 internal iliac artery ; 4', right external iliac vein ; 5, placed on the ilio-lumbar nervous 

 trunk, points to the posterior division of the internal iliac artery giving off the gluteal ; 

 5', ilio-lumbar artery ; 5", lateral sacral artery with branches passing into tbe anterior 

 sacral foramina : 6, placed on the anterior division of the first sacral nerve, points to the 

 sciatic artery coming from the anterior division of the internal iliac ; 7, pudic artery; 7', 

 the same artery passing behind the spine of the ischium, and proceeding within the 

 ischium and obturator interims muscle, accompanied by the pudic nerve towards the 

 perineum ; towards f, inferior huemorrhoidal branches are given off; 7", superficial 

 perineal artery and nerve ; 8, hypogastric artery, with the obliterated remains of the 

 umbilical artery cut short, and 8', superior vesical branches rising from it ; 9, obturator 

 artery with the corresponding nerve and vein ; 9', the pubic twigs which anastomose 

 with descending twigs of the epigastric artery, and from which, by the enlargement of 

 one of them, the aberrant obturator artery may proceed ; 10, inferior vesical ; 11, middle 

 hffimorrhoidal vessels rising in this instance from the pudic ; 12, epigastric artery winding 

 to the inside of +, +, the vas deferens and spermatic cord ; 13, circumflex iliac artery ; 

 14, spermatic artery and vein divided superiorly ; 15, twigs of the ilio-lumbar artery 

 proceeding to anastomose with the circumflex iliac. 



