THE VISCERAL CAVITY 17 



80. Toward the cephalic end, at the point where the 

 abdominal vein leaves the body wall, it is joined by a 

 small vein from the heart, the cardiac vein. 



Drawing 6. Make a working sketch of the hepato- 

 portal system, which is composed of the portal and 

 abdominal veins and their tributaries. 



