FEOG 23 1 



small intestine thin and flexible or thick and 

 rigid ? What is its length ? The upper, nearly- 

 straight portion of the small intestine is called 

 the duodenum ; the lower, coiled portion is the 

 ilium. Split open the small intestine, and com- 

 pare its inner wall with that of the stomach. 

 Note the shaggy appearance of the lining of the 

 duodenum. Examine the transverse folds or in- 

 testinal valves in the ilium. Look for the valve, 

 the pylorus, between the stomach and the duo- 

 denum. 

 e. The large intestine. — What is its position in 

 the body ? Shape ? At what point on its sur- 

 face does the small intestine unite with it? How 

 is it situated with regard to the urinary bladder ? 

 Split the pubic bone apart, remove the two hind 

 legs, and trace the large intestine down to the 

 point where it unites with the cloaca. Examine 

 the inside of the large intestine, and note the valves 

 at the point of entrance of the small intestine. 



/. The cloaca. — What is its position % Length ? 

 Structure of its walls ? 



Find, lying partly in the loop between the 

 stomach and the duodenum, 



g. The pancreas. — What is its relation to the 

 stomach? To the liver? What is its texture? 

 Shape? Color? 



Spread apart the lobes of the liver and find a 

 small yellow sac, 



h. The gall-bladder. — Between which lobes does 

 it lie? What is its position with regard to the 

 heart? Look for the ducts, the cystic ducts, 

 entering the gall-bladder from the liver. 



