The digestive system, the urinary system. 

 - Chicago :  World Book,  c2007. 
 - 48 p. :  col. ill ;  28 cm. 
 - World Book's human body works .
 - World Book's human body works. .
<br/><br/>Includes bibliographical references (p. 47) and index. 
<br/><br/>What is digestion? -- Teeth and tongue -- From mouth to stomach -- Peristalsis -- The stomach -- The small intestine -- The pancreas -- Digestion chemicals -- The liver -- Cleaning the blood -- The large intestine -- The kidneys -- The urinary tract -- Food for growth -- Food for energy -- Measuring food energy -- Vitamins and minerals -- A balanced diet -- Food poisoning -- Digestive illnesses -- Healthy digestion. 
<br/><br/><label>ISBN: </label>0716644290 9780716644293 
<br/><br/><label>LCCN: </label>2005034768 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digestion--Juvenile literature.<br/>Digestive organs--Juvenile literature.<br/>Urinary organs--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>QP145  / .D569 2007 
<br/><br/><label>Dewey Class. No.: </label>612.3