1. Food descends from mouth to stomach through this muscular tube.   9   8   15   6   Hint Half-n-half Clue   2. Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   1   9   8   13   Half-n-half Clue   3. Bile is stored here.   9   10   1   12   Half-n-half Clue   4. Undigested food is excreted out of the body through this opening.   6   3   14   16   Half-n-half Clue   5. It is a muscular tube containing semicircular rings of cartilages.   16   10   5   3   Half-n-half Clue   6. Food is mixed with saliva here.   2   13   15   5   Half-n-half Clue   7. It secretes pancreatic juice.   6   15   13   2   Half-n-half Clue