CHAPTER IX. 



THE ABDOMEN AND ITS CONTENTS. 



THE STOMACH. 

 Fig. 21. 



a The oesophagus or gullet, extending to the stomach. 



b The entrance of the gullet into the stomach. The circular layers of the mu8 

 cles are very thick and strong, and which, by their contractions, help 

 to render it difficult for the food to be returned or vomited. 



c The portion of the .stomach which is covered by cuticle, or in.sensible skin. 



d d The margin, vshich separates the cuticular from the villous portion. 



e e The mucous, or villous (velvet) portion of the stomach, in which the food ia 

 principally digested. 



f The communication between the stomach and the first intestine. 



g The common orifice through which the bile and the secretion from the pan- 

 creas pass into the first intestine. The two pins mark the two tubes 

 here united 



h. A smaller orifice, through which a portion of the secretion of the pancrea«i 

 enters the intestines. 



The oesophagus (gullet) extends from the mouth down the left 

 side of the neck, and enters the stomach in a somewhat curvec' 



