DIGESTION AND ABSORPTION OF NUTRIENTS 83 



intestines which begin at the stomach and open to the out- 

 side of the body at the lower part of the trunk. 



nasal cavity 

 palate 

 tongue 



pylorus 



bile duct 

 transverse colon (cut) 



common orifice of bile 



and pancreatic ducts 



beginning of small 



intestine 



passage from nose to throat 



-cavity of mouth 

 throat cavity 

 pening of windpipe 



pancreatic duct 



appendix 



FIG. 26. Parts of the alimentary canal. (The liver has been tilted upward 

 to show the gall bladder on its lower surface ; a piece of the large intes- 

 tine has been removed to show the pancreas behind it.) Compare this 

 figure with Fig. 2 which shows all the organs in position. 



112. Digestive glands. Several organs that are neces- 

 sary in the process of digestion, as already discussed in the 



