1. 6   Churning of food occurs here.   It secretes saliva.   Exchange of gases occurs here.   These are formed by division of trachea.   Hint Half-n-half Clue   2. 8   Churning of food occurs here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Undigested food is excreted out of the body through this opening.   It pumps blood to various parts of the body.   Half-n-half Clue   3. 1   Bile is stored here.   Absorption of food occurs here.   Most of the ingested water is absorbed here.   Larger dust particles in the inhaled air are trapped in the mucus and hair found here.   Half-n-half Clue   4. 11   These are formed by division of trachea.   Absorption of food occurs here.   It pumps blood to various parts of the body.   Bile is secreted here.   Half-n-half Clue   5. 7   Exchange of gases occurs here.   Food descends from mouth to stomach through this muscular tube.   Undigested food is excreted out of the body through this opening.   It pumps blood to various parts of the body.   Half-n-half Clue   6. 12   Food is mixed with saliva here.   Churning of food occurs here.   Bile is secreted here.   Undigested food is excreted out of the body through this opening.   Half-n-half Clue   7. 10   Bile is stored here.   These are formed by division of trachea.   Churning of food occurs here.   Undigested food is excreted out of the body through this opening.   Half-n-half Clue