438 



COMMON ILIAC ARTERY. 



The common iliac artery of the right side is separated from tl)e front 

 of the last lumbar vertebra, the two common iliac veins being inter- 

 posed. The artery of the left side is crossed by the branches of the 

 inferior mesenteric vessels. 



Relation to Veins. — The left iliac vein, supported on the last lumbar 

 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 



Fig. 281. Fig. 2S1.— YiEW op 



THE KIGHT SIDE OK 



A Male Pelvis 

 Showing the ex- 

 ternal AND IN- 

 TERNAL Iliac Ar- 

 teries AND THEIR 

 branches. (A.T. ) ^ 



Tlie viscera of the 

 pelvis have been re- 

 moveJ as well as the 

 internal iliac veins: the 

 larger nerves have been 

 retained, a, body of 

 tlie 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- 

 sci.atic ligament ; /, 

 tuberosity of the is- 

 chium covered inter- 

 nally by the great 

 sacro-sciatic ligament ; 

 //, obturator foramen ; 

 /, iliacus muscle ; 1 , 

 abdominal aorta ; 1', 

 middle sacral artery ; 

 2, 2, common iliac ar- 

 teries ; 2', right exter- 

 nal iliac ; 3, vena cava 

 inferior ; 4, 4, com- 

 mon iliac veins ; the 

 number on tlie right points by a line to the right internal iliac artery ; 4', right external 

 iliac vein ; 5, placed on the lumbo-sacral nei'vous 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 the anterior sacral foramina ; 6, placed on the anterior 

 division of tlie firet .'iacral 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 internus muscle, 

 .accompanied by the pudic nerve towards the perina;um ; towards /, inferior hoemorrhoidal 

 branches are given off ; 7", superficial perineal artery and nerve ; 8, hypogastric artery, 

 with the obliterated remains of the umbilical artery cut short, and S', 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 ; 10, 

 inferior vesical ; 11, middle ha;morrhoidal vessels rising in this instance from the pudic ; 



12, epigastric artery winding to the inside of -I-, + , 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. 



