1 82 Anatomy of the Rabbit. 



(f) The pyloric limb (pars pylorica) forms the right portion 

 of the organ. 



(g) The pylorus, the point of communication of the stomach 

 with the intestine (duodenum) . It is marked by an annular 

 constriction, preceding which is a greatly thickened muscular 

 portion of the pyloric limb,, known as the pyloric antrum 

 (antrum pyloricum). 



2. Raise the posterior portion of the stomach and turn it for- 

 ward. Note on the dorsal surface of the greater curvature a dark 

 red elongated body, the spleen (Hen). On th^' right side of its 

 artery, enclosed in the peritoneum, will be seen ^'diffuse br'Ownish 

 glandular mass, a portion of the pancreas. Trace the course of the 

 peritoneum from the dorsal abdominal wall to the liver, as follows: 



(a) A broad fold of peritoneum, the mesogastrium, connects 

 the dorsal abdominal wall and the diaphragm with the left 

 side and dorsal surface of the greater curvature Its 

 posterior portion is divided into two parts by the spleen 

 The dorsal part, the phrenicosplenic ligament (lig. phreni- 

 colienale) connects the spleen with the dorsal body-wall. 

 The ventral part, the gastrosplenic ligament (lig. gastro- 



ienale) connects the spleen with the greater curvature 

 (cf. Fig. 40). 



(b) The peritoneum is projected backward from the greater 

 curvature as a free fold, the greater omentum (omentum 

 majus), which covers the intestines to a certain extent. It 

 usually contains fat. It is composed of four leaves, of which 

 two come from the surface of the stomach and two others 

 pass forward in a dorsal position from the free posterior 

 border to unite with the transverse mesocolon. 



(c) The lesser omentum (omentum minus) passes from the 

 lesser curvature and the duodenum to the posterior surface 

 of the liver. Its thickened margin on the right side forms 

 the hepatoduodenal ligament (lig. hepatoduodenale) 

 which carries three important structures, namely, the 

 common bile duct, the hepatic artery and the portal vein. 

 Its left portion forms a thin membrane, the hepatogastric 

 omentum, connecting the caudate lobe with the lesser 

 curvature. 



