356 ANATOMICAL TECHNOLOGY. 



splenic part of the pancreas. Trace it to these parts. It may also receive the vessels 

 mentioned in §§ 949, 950. 



§ 951. V. portee, az. — The trunk formed near the pylorus by the 

 YV. mesentericce and the V. gastro-splenica is called the Vena 

 porta. It passes to the liver parallel with the ductus choledochus 

 communis (§ 746 [3]), and receives the following branches when 

 they do not empty into any of the preceding : — 



§ 952. V. pancreatico-duodenalis, az. — Coming from the pancreas and the duode- 

 num. This vessel empties into the F. •porter on the dorso-dextral side of the pylorus. 



§ 9.53. V. gastro-epiploica. oz. — This comes from the pyloric part of the great curva- 

 ture of the stomach and the dorsal fold of the great omentum. It empties into the V- 

 portm opposite the pylorus. 



§ 954. V. coronaria ventriculi, az, — As the name indicates, this comes from the lesser 

 curvature of the stomach. It empties into the Y. portcB somewhat nearer the liver than 

 the preceding. The three branches j ust described may all unite to form a single trunk 

 before emptying into the F. portm. 



Systemic Abdominal Vein-s. (See Table, § 915.) 



§ 955. Postcava s. Vena cava inferior, az. (see Table, § 915, 

 Fig. 101, 103, Postcv., 107, Pcv.). — Turn the stomach and intestines 

 to the left. The postcava, filled with blue plaster, will appear ex- 

 tending somewhat obliquely caudo-sinistrad along the meson. Just 

 cephalad of the right kidney it penetrates the liver and is entirely 

 surrounded by its substance. Opposite the last lumbar vertebra 

 the vessel usually becomes entirely mesal in position and reaches 

 the dorsal side of the aorta (Fig. 101). The vessel may divide oppo- 

 site the kidneys into two nearly equal branches, which extend 

 caudad, one on each side of the meson. 



§ 956. V. phrenica (Fig. 90). — These pass mesad along the opposite halves of the dia- 

 phragm, and open into the postcava just as it penetrates the diaphragm. Dravr the liver 

 somewhat caudad, and the vein may be easily demonstrated with the tracer. 



§ 957. VV. hepaticae, az. (10-12), (Fig. 101).— These convey the blood supplied to the 

 liver by the F. portm and the A. hepatica into the postcava. They may be demonstrated 

 by tearing away the liver substance next the postcava. Their number is variable, aa the 

 lobes sometimes g^ve off more than one branch each. 



§ 958. V. adreno-lumbalis (Fig. 101, 103, 107).— This vein returns blood from the 

 adrenal (§ 760), from the M. p.ioas and the dorso-lateral parietes of the abdomen opposite 

 the kidney. It- opens into the postcava just caudad of the liver, or it may empty into the 

 F. renalis (§ 939). To demonstrate it, turn the stomach and intestines aside, and employ 

 the tracer. The vein usually rests in a groove on the ventral side of the adrenal (Fig. 101). 



§ 959. V. renaUs (Fig. 101, V. rn , 103, V. rn., 107, V. m.).— This 

 extends in nearly a straight line from the kidney and empties into the 



