THE ABDOMEN AND ITS CONTENTS 



109 



tioned on page 4 through the superior mesenteric vein, 

 which can be found readily in the mesentery of the small 

 intestine (Fig. 30, Intestinal). A hypodermic syringe, prefer- 



Post Duodenum 



Small Intestine 



Fig. 30. 



-Distribution of the hepatic portal vein, ventral view. 

 H. G. Rodeck.) 



(Drawn by 



ably a ten to twenty cc. Luer type, with a large needle is 

 satisfactory for this purpose. A ligature (a piece of wrapping 

 twine will do) must be put around the vein a short distance 

 on either side of the needle and tied before the needle is with- 



