438 



ANGIOLOGY. 



matic cord. On reaching the abdomen they communicate freely, 

 forming the spermatic plexus, finally terminating in the cava 

 near the renal, by one or two trunks. In the female these veins 

 become the utero-ovarian, which follow the exact course of the 

 utero-ovarian arteries. 



The LUMBAR veins correspond to their satellite arteries, and 

 result from muscular, spinal, and abdominal parietal branches. 



FIG. 166. 



Viscera and veins of the portal system. 1, Spleen ; 2, Stomach ; 3 3, Convolution of small intestine ; 

 4, Caecum ; 5, Great colon ; 6 6, Floating colon and rectum ; 7, Pancreas ; 8, Liver ; a a, Portal 

 vein ; b, Anterior mesenteric vein ; V V, Veins of small intestine ; 6", Ileo-csecal ; &'", Colic vein ; 

 c c, Posterior raesenteric vein ; d, Gastro-splenic ; d', Posterior gastric vein ; d", Splenic vein ; 

 d'", Its gastric branches. 



They join the upper surface of the vena cava. 

 often terminate in the vena azygos. 



The anterior ones 



COMMON ILIAC VEINS. 

 (FiG. 165. a, b.) 



These are two large, short vessels, formed by the union of the 

 external and internal iliacs, the former collecting the blood from 



