112 



MANUAL OF PHYSIOLOGY. 



must turn to the chapter on that subject. Here, however, it may 

 not be out of place to describe briefly the special character of 

 the muscles found in the wall of the digestive tube and their 

 general arrangement. 



FIG. 45. 



Diagram of Alimentary Tract. Angles of mouth slit to show the back of the buccal 

 cavity and the top of the pharynx. (c) Cardiac; (p) Pyloric parts of stomach ; (d) Duo- 

 denum; (i) Jejunum and Ileum; (ac) Ascending, (tc) Transverse, and (dc) Descending 

 Colon; (r) Rectum; (a) Anus. 



