1. Exchange of gases occurs here.   13   7   12   2   Hint Half-n-half Clue   2. Bile is stored here.   10   7   15   9   Half-n-half Clue   3. Food descends from mouth to stomach through this muscular tube.   9   8   16   10   Half-n-half Clue   4. These are formed by division of trachea.   13   6   2   3   Half-n-half Clue   5. Food is mixed with saliva here.   2   1   11   15   Half-n-half Clue   6. It pumps blood to various parts of the body.   15   8   9   10   Half-n-half Clue   7. Most of the ingested water is absorbed here.   7   12   8   14   Half-n-half Clue