478 



VEIXS OF THE LOWER LIMB AND PELVIS. 



TRIBUTARIES. The tributaries of the internal iliac vein correspond in 

 general to the various branches of the internal iliac artery, with the 

 exception that the internal pudic vein does not receive the main supply 

 of blood from the dorsal vein of the penis. The visceral veins are remark- 

 able for their size and frequent anastomoses, and have been described as 

 forming a series of plexuses, severally named the vesical, prostatic, hcemor- 

 rhoidal, uterine, and vaginal. 



Fig. 3'25. INTERNAL 

 VIEW OF THE MALR 

 PELVIS FKOM THE 

 LEFT SIDE, TO SHOW 

 THE PRINCIPAL 

 VEINS. 



The greater part 

 of the os innomina- 

 tum and pelvic wall 

 of the left side, and 

 the upper parts of 

 the rectum and 

 urinary bladder, have 

 been removed : the 

 left common iliac and 

 the right internal 

 iliac arteries, and the 

 left external and in- 

 ternal iliac veins, have 

 been cut short, a, 

 the right psoas mag- 

 nus muscle ; b, the 

 anterior superior iliac 

 spine ; c, Poupart's 

 ligament ; d, the 

 cavernous and spongy 

 bodies of the penis 

 divided near the i oot ; 

 + , the spongy body 

 of the bulb, above 

 which the mem- 

 branous part of the 

 urethra ; the prostate, 

 &c. ; e, the left os 

 pubis close to the 

 symphysis ; f, the 

 anus ; g, the spine of 



the ischium with the short sacro-sciatic ligament; 7i, auricular sacro-iliac surface; i, 

 interior of the urinary bladder ; k, exterior of the rectum ; I, transverse process of the 

 fourth lumbar vertebra ; 1, lower part of the vena cava inferior ; 1', abdominal aorta ; 2, 

 common iliac veins ; 2', right common iliac artery ; 3, external iliac veins; 3', external 

 iliac artery ; 4, internal iliac veins, that of the right side entire, that of the left divided 

 and in great part removed ; 5, middle and other veins of the sacral plexus ; 6, ilio-lumbar 

 and lumbar veins ; 7, right gluteal and upper lateral sacral veins ; 8, 8', obturator vein 

 and artery of the right side ; 9, pelvic plexus of veins of the right side ; 9', that of the 

 leftside connected with the lower vesical plexus; 10, placed on the right side on the 

 short sacro-sciatic ligament immediately below the division of the internal iliac vein into 

 the pudic and sciatic veins : on the left side, below 4, the sciatic vein is cut short ; 10, 

 lower down, the pudic vein; 10', the perineal veins ; 11, placed on the prostate among 

 the lower vesical veins, into one of which the left dorsal vein of the penis, 11, is seen to 

 pass ; 12, placed on the lower part of the rectum, may indicate the plexus of hasmorrhoidal 



The vesical plexus presents vessels over the whole of the bladder external 



