EMBRYOLOGY. 

 Fig, 561. 



FtETUS OPENED ON THE LEFT SIDE TO SHOW THE COURSE OF THE UMBIUCAL VESSEI;S 

 IN THE BODY. 



A, Umbilical cord ; B, umbilical vein ; 

 6, spleen ; H, liver ; /, intestine ; 

 arteriosus ; N, thymus gland. 



C, umbilical artery; £>, bladder; ^.testicle; J", kidney; 

 /, lung; K, heart; L, pulmonary artery; if, ductus 



Fig. 562. 



BIX)OD-VESSELS IN THE LIVER OF AN EQUINE F<ETUS AT MID-TERM. 



A Umbilical vein; B, its anastomoses with the portal vein, C] D, ductus venosus; E, posterior 



rena cava. 



