1. Churning of food occurs here.   11   13   12   14   Hint Half-n-half Clue   2. It secretes saliva.   3   14   9   10   Half-n-half Clue   3. These are formed by division of trachea.   11   16   12   6   Half-n-half Clue   4. Exchange of gases occurs here.   8   5   16   7   Half-n-half Clue   5. It secretes pancreatic juice.   14   12   13   8   Half-n-half Clue   6. It pumps blood to various parts of the body.   1   13   16   8   Half-n-half Clue   7. Food descends from mouth to stomach through this muscular tube.   9   13   11   5   Half-n-half Clue