CHAPTER VIII 

 THE ORGANS OF DIGESTION 



MOUTH, PHARYNX, ESOPHAGUS, STOMACH, AND 

 INTESTINES 



These, with the glands which secrete the digestive fluids, con- 

 stitute the digestive apparatus. 



\Salivary Glatut 



Esophagus 



Vermiform Append, 



FIG. 99. GENERAL SCHEME OF THE DIGESTIVE TRACT, WITH THE CHIEF GLANDS 

 OPENING INTO IT; TOGETHER WITH THE LACTEALS ARISING FROM THE INTESTINE 

 AND JOINING THE THORACIC DUCT. (Landois.) 



The alimentary tract or canal is a series of channels included 

 within the organs named, constituting a long tube of mucous 



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