ANGIOLOGY 



247 



the triceps muscle. It is formed by the vena ulnaris, and the vena 

 radialis. It passes with the median nerve and the brachial artery 

 over the inner surface of the humeral joint. Posterior to the 

 humeral head it receives the vena profunda humeri. At~the 

 shoulder cavity it receives the vena cutanea ulnaris or vena 

 basilica. 



The trunk of the axillary vein is very short and is formed by the 

 veins of the shoulder and the wing. The deeper wing veins accom- 

 pany the large arterial and the nerve trunks. 



BRANCHES OF THE VENA ILIACA INTERNA 



Vena interver-tebralis lumbalis 



Vena iliaca 

 interna or 

 vena hy- 

 pogastrica 



Pars truncalis 



Pars caudalis 



Pars renalis 



Vena renalis magna 



Vena hypogastrica caudalis si- 



nistra 



Vena renalis Vena hypogastrica caudalis dex- 

 tra 



Vena portalis 

 Vena coccygea Vena cutanea et pudenda 



Vena coccygea mesenterica 

 Vena cutanea pubica 

 Vena cutanea caudalis 

 Vena pudenda ( Vena spermatica 

 Vena caudalis muscularis 

 Venae sacrales 



Venae intervertebrales sacralis ( Venae renales 

 Venae renales 

 Vena ischiadica 

 Vena obturatoria 

 Vena sup.ra-renalis externa ( Azygos sacralis 



THE POSTERIOR VENA CAVA 



The posterior vena cava (Fig. 63, No. 18; Fig. 70, No. 8) has its 

 origin in the posterior half of the body of the bird, somewhat to 

 the right of the posterior aorta, near the anterior lobe of the kidney, 

 by the union of the right and the left vena iliaca communis. It 

 receives the blood from all of the posterior half of the body including 

 the posterior limbs, of the visceral organs, of the abdominal and the 

 pelvic cavity. The posterior vena cava passes dorsally through 

 the right lobe of the liver and through the diaphragm and ends in a 

 short, broad trunk on the posterior dorsal side of the right auricle 

 of the heart. Its opening into the heart is guarded by two half- 



