248 



ANATOMY OF THE DOMESTIC FOWL 



moon shaped valves. The basal part of the trunk reaches from ^e 

 right auricle o the heart to the upper anterior rim of the Hver where 

 it receives three large trunks, first, the right and second, the left 

 vena portalis hepatica magna, and third, smaller vessels from the 

 liver substance, 



THE VEINS OF THE POSTERIOR EXTREMITY 



In the skin region on the inner sides of the toes near their bases 

 the small veins collect into five metatarsal veins. The largest vein 

 collects the blood from the first, the second, and the third toe, 

 passes up the tarsus and is called the vena metatarsalis interna, or 

 vena magna (Fig. 65, No. 7). It is located just beneath the skin 

 on the inner surface of the metatarsal bone. It passes in a circle, 

 around the condyle of the tibia and becomes the vena tibialis postica 

 (Fig. 65, No. 3 and 8). The vena tibialis postica passes under the 

 tendon AchiUis and the tendon of the flexor digitorum brevis, hes 



BRANCHES OF THE VENA CAVA POSTERIOR 



Vena cava 

 posterior 



Vena ovariana 



Venas testiculae 



Vena proventricularis communis 



Vena suprarenalis revehentis 



Vena portalis magna sinistra 



Vena portalis magna dextra 



Venae innominatae 



Venae hepaticae 



Vena cardis coronaria magna 



Vena proventricularis inferior 



Vena iliaca interna ( Vena hypogastrica. 



Vena iliaca externa I Vena renalis 



Vena supra-renalis externa 

 Vena iliaca Vena ischiadica 

 communis Vena renalis 



Vena intervertebralis lumbalis 



Vena renalis magna 



Vena 

 portalis 

 dextra 



,, ^ . . . f Vena coccygo-mesenterica 



Vena mesentenca commums ,, . 



I. Vena mesentenca anterior 



Vena pancreatico-duodenalis 



,, . , . ,. ,. f Vena proventricularis 



Vena proven triculans henalis ,^ , . 



I. Vena splenica 



Vena coccygo-mesenterica f Vena hemorrhoidalis 



