gastrointestinal system

An overview of the digestive system and how it works.

Colorful photographs, illustrations, and text describe the digestive system.

An overview of the digestive system and how it works.

Provides information about the human digestive system, explaining what it is, how it works, and how to keep it healthy.

An introduction to biology, focusing on the importance of diet in keeping the body's systems in good working order, with introductions to notable discoveries and scientists in the field, feature boxes, and illustrations.

Describes the appearance, characteristics, and function of each part of the digestive system.

Simply describes the functioning of the digestive system and explains the process of digestion.

Discusses the function of the digestive system, the importance of food, and the consequences of poor nutrition.

Discusses the importance of food to good health, and explains what happens to food inside the stomach. Includes photographs and illustrations.