THE CIRCULATORY SYSTEM 



161 



blood of the portal circulation passes in the liver through 

 a third set of capillaries. 



Fig. 92. Diagram of the course of the blood in the circulation. 



225. The General or Systemic Circulation (Figs. 85 and 

 92). The blood leaves the heart by the aorta, which 

 arises from the left ventricle and after forming a large 



