Digestive System (Human Body)
By Kristin Petrie.
Description
Through engaging text, readers learn about the human body’s digestive system, which turns the foods you eat into substances your body can use. This book explains how food moves through the digestive system. Readers learn that chewing breaks food into small pieces and helps saliva reach all of the food. The tongue’s duties, which are to mix the food with saliva, position the food within the mouth, form food pieces into a bolus, and finally push the bolus to the back of the mouth, are also discussed. Other topics discussed include the pharynx, or throat, the esophagus, the lar...
ISBN(s)
159679710X, 9781596797109
