538 



COMPARATIVE ANATOMY 



often present at the junction of the large and small intestine. 

 Between the stomach and duodenum as well as between the ileum 



Ca. 



Fig. 190. — Diagram of the Alimentary C.inal of Max. 



01 s, salivary glands ; Ph., pharynx ; Gl. ill, thyroid ; Gl. thy, thymus ; Lg, lung ; 

 Oe, cesophagus ; Z, diaphragm ; Jif/, stomach ; iy&, liver ; Pa, pancreas ; 

 Dd, small intestine ; VU-, ileo-colic valve ; Pv, vermiform appendix (cjeoum) ; 

 Ca, a, Gd, ascending, transverse, and descending portions of the colon; E, 

 rectum ; A , anus. 



and large intestine there is, as a rule, a marked elevation of the 

 muscular coat serving as a sphincter {'pyloric and ilco-colic valves). 

 There is also a sphincter muscle at the anus. 



