1. 14   Most of the ingested water is absorbed here.   It secretes saliva.   Exchange of gases occurs here.   Food descends from mouth to stomach through this muscular tube.   Hint Half-n-half Clue   2. 10   It secretes saliva.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Bile is stored here.   It secretes pancreatic juice.   Half-n-half Clue   3. 13   Exchange of gases occurs here.   It secretes saliva.   Undigested food is excreted out of the body through this opening.   It secretes pancreatic juice.   Half-n-half Clue   4. 9   Exchange of gases occurs here.   It pumps blood to various parts of the body.   Food descends from mouth to stomach through this muscular tube.   It is a muscular tube containing semicircular rings of cartilages.   Half-n-half Clue   5. 11   Food is mixed with saliva here.   Exchange of gases occurs here.   Bile is secreted here.   Bile is stored here.   Half-n-half Clue   6. 6   It secretes saliva.   These are formed by division of trachea.   Churning of food occurs here.   Exchange of gases occurs here.   Half-n-half Clue   7. 15   It pumps blood to various parts of the body.   Exchange of gases occurs here.   Food is mixed with saliva here.   Absorption of food occurs here.   Half-n-half Clue