1. 7   Exchange of gases occurs here.   Undigested food is excreted out of the body through this opening.   It secretes pancreatic juice.   Bile is stored here.   Hint Half-n-half Clue   2. 10   Bile is stored here.   Bile is secreted here.   It is a muscular tube containing semicircular rings of cartilages.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Half-n-half Clue   3. 11   It is a muscular tube containing semicircular rings of cartilages.   Undigested food is excreted out of the body through this opening.   Bile is secreted here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Half-n-half Clue   4. 6   It pumps blood to various parts of the body.   Bile is secreted here.   These are formed by division of trachea.   Churning of food occurs here.   Half-n-half Clue   5. 12   Exchange of gases occurs here.   Bile is stored here.   Churning of food occurs here.   Food descends from mouth to stomach through this muscular tube.   Half-n-half Clue   6. 13   It secretes pancreatic juice.   Food is mixed with saliva here.   These are formed by division of trachea.   Churning of food occurs here.   Half-n-half Clue   7. 9   It secretes saliva.   Bile is stored here.   Food is mixed with saliva here.   Food descends from mouth to stomach through this muscular tube.   Half-n-half Clue