1. 11   It pumps blood to various parts of the body.   Exchange of gases occurs here.   Bile is secreted here.   Undigested food is excreted out of the body through this opening.   Hint Half-n-half Clue   2. 6   Undigested food is excreted out of the body through this opening.   Exchange of gases occurs here.   Churning of food occurs here.   These are formed by division of trachea.   Half-n-half Clue   3. 10   Most of the ingested water is absorbed here.   Bile is stored here.   It secretes saliva.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Half-n-half Clue   4. 7   Undigested food is excreted out of the body through this opening.   Exchange of gases occurs here.   It is a muscular tube containing semicircular rings of cartilages.   It pumps blood to various parts of the body.   Half-n-half Clue   5. 12   Absorption of food occurs here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Churning of food occurs here.   It pumps blood to various parts of the body.   Half-n-half Clue   6. 14   Bile is secreted here.   Bile is stored here.   Most of the ingested water is absorbed here.   Food is mixed with saliva here.   Half-n-half Clue   7. 9   It secretes pancreatic juice.   Food is mixed with saliva here.   Food descends from mouth to stomach through this muscular tube.   It secretes saliva.   Half-n-half Clue