THE COD. 113 



large nerve entering the abdomen alongside the gullet and spreading 

 out into a number of fine branches on the surface of the stomach. 



124. The cceliac and mesenteric arteries (Fig. 32, cce, w), entering 

 the abdomen above and to the right of the gullet ' the former goes 

 almost exclusively to the pyloric caeca : the mesenteric artery supplies 

 the stomach (g], intestines (/), spleen (spl], andrete mirabile (x). 



125. The two hepatic veins (Fig. 32, hp] proceeding, one on each 

 side, from the anterior border of the liver, through the pericardio-peri- 

 toneal septum to the sinus venosus. 



126. The spermatic vein (Fig. 32, sp.v) bringing blood from the 

 ovary ortestis, from the anterior end of which it passes directly forwards 

 to join the precaval vein ( 141) : the spermatic artery (sp.a) arises 

 from one of the gastric branches of the mesenteric. 



XXIII. Remove the liver, stomach, intestine and 

 spleen : cut open the stomach and duodenum, 

 wash out their contents and note 



127. The rugce of the stomach, prominent longitudinal 

 folds into which its mucous membrane is thrown. 



128. The pyloric valve, a circular ridge of mucous 

 membrane forming a constriction between the stomach and 

 intestine. 



129. The aperture of the bile-duct (Fig. 31, x) in the 

 duodenum, near the pyloric valve : a bristle should be 

 passed from it into the duct. 



130. The three or four openings of the pyloric caeca 

 (Fig. 31, below #), situated in the duodenum between the 

 pylorus and the bilary aperture. 



XXIV. Make out the following points in the repro- 

 ductive organs, still left in situ : 



/// the Male. 



131. The testes, two elongated bodies, each consisting 

 of a straight tubular axis, the vas deferens, with a soft 

 greatly lobulated body, the testis proper, attached to the 

 whole length of one side. At about one fourth of their 

 length from the posterior end, the two testes unite with 



i 



