1. Absorption of food occurs here.   12   10   15   11   Hint Half-n-half Clue   2. These are formed by division of trachea.   14   7   9   6   Half-n-half Clue   3. Undigested food is excreted out of the body through this opening.   8   14   16   10   Half-n-half Clue   4. Food descends from mouth to stomach through this muscular tube.   8   15   9   7   Half-n-half Clue   5. Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   1   8   6   14   Half-n-half Clue   6. It secretes saliva.   6   15   3   2   Half-n-half Clue   7. Bile is secreted here.   6   5   11   9   Half-n-half Clue