FROG. 99 



(d) The stomacli : lying partly beneath the 



left lobe of the liver. 



(e) The small intestine : a light-colored 



slightly convoluted tube. It passes 

 posteriorly into the large intestine. 

 The terminal part of the large intestine 

 is the cloaca. Note the mesentery by 

 which the intestine is attached to the 

 dorsal body-wall. 



(/) The bladder : a thin-walled bilobed sac 

 in the posterior ventral part of the 

 body-cavity. 

 Insert a bloivpipe into the glottis and inflate. 



The lungs, if hidden before, will now come 



into view. 



Pass a probe into the mouth and through the 



oesophagus into the stomach. Turn the liver 



forward to see the oesophagus and stomach. 



Uncoil the intestine and identify its parts. 



Find : 



(g) The pancreas, in the loop between the 



stomach and duodenum. 

 (h) The spleen, in the mesentery near the 



beginning of the large intestine. 

 (i) The two lobes of the liver. Observe that 

 the larger lobe is subdivided into two. 

 Note the position of the gall-bladder. 

 Make a slight slit in the duodenum and 

 try by pressing upon the gall-bladder 



