1. 16   It secretes saliva.   Food descends from mouth to stomach through this muscular tube.   Exchange of gases occurs here.   Undigested food is excreted out of the body through this opening.   Hint Half-n-half Clue   2. 1   Food is mixed with saliva here.   Bile is stored here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Absorption of food occurs here.   Half-n-half Clue   3. 12   Most of the ingested water is absorbed here.   It pumps blood to various parts of the body.   Bile is stored here.   Churning of food occurs here.   Half-n-half Clue   4. 13   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   It secretes pancreatic juice.   Exchange of gases occurs here.   Bile is secreted here.   Half-n-half Clue   5. 3   Food is mixed with saliva here.   It secretes saliva.   Undigested food is excreted out of the body through this opening.   Bile is secreted here.   Half-n-half Clue   6. 14   Undigested food is excreted out of the body through this opening.   Most of the ingested water is absorbed here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Food is mixed with saliva here.   Half-n-half Clue   7. 9   It secretes pancreatic juice.   Bile is secreted here.   Food descends from mouth to stomach through this muscular tube.   Bile is stored here.   Half-n-half Clue