B.  GENERAL POINTS ANSWERS:

    1.  A complete digestive system (one-way continuous  G A S T R O -
            I N T E S T I N A L   tract) is found in our phylum  C H O R D A T A . 

                   
            ...  The human photo is the one on the _right__.

      2.  Food moved through the GI tract by slow rhythmic I N V O L U N T A R Y
           muscular contractions called   P E R I S T A L S I S

             ...  (Upper GI video)  The large dark body is the  S T O M A C H.

            ...  (Lower GI sheep bowel video)