SALIVARY GLANDS AND SALIVA. 



265 



the mouth ; the solid articles of food are here submitted to 

 the action of the teeth (p. 59), whereby they are divided 

 and crushed, and by being at the same time mixed with 



Fig. 66* 



the fluids of the mouth, are reduced to a soft pulp, capable 

 of being easily swallowed. The fluids with which the food 



* Fig. 66. Diagram of the alimentary canal. The small intestine 

 of man is from about 3 to 4 times as long as the large intestine. 



