FEOG 241 



Make a diagram showing the vein and its branches. 



e. The hepatic portal vein. — Look for this vein 

 near the point where the anterior abdominal vein 

 sends its branches to the liver. Endeavor to find 

 the branches — gastric vein, intestinal vein, 

 and sometimes splenic vein — by whose union 

 this vein is formed. 

 Make a diagram of the hepatic portal vein and its 

 branches. 



f. The renal portal vein. — This vein is found en- 

 tering the outer side of the kidney. Trace it 

 backward to its branches, the sciatic vein from 

 the thigh and the dorso-lumbar vein from the 

 back, and, in female, the oviducal veins from 

 the ovary. 

 Make a diagram of the renal portal vein and its 

 branches. 



III. The a/rteries. 



Take a fresh specimen and prepare it as di- 

 rected for the study of the veins. The arteries 

 may be distinguished as being of lighter color and 

 having thicker walls than the veins. Distend the 

 oesophagus by thrusting into it a slender pencil, 

 a glass rod, or a roll of paper. 



a. The aortic arches. — Trace forward the right 

 and left branches of the truncus arteriosus, clean- 

 ing away the muscles and connective tissue, and 

 notice that each branch subdivides into three sets 

 of tubes which form the aortic arches. These are 

 the carotid, arch, which is the anterior of the 

 three ; the systemic arch, which lies between the 



other two, and the pulmo-cTitaneous arch. How 

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