Examines the body's circulatory system and heart, and describes how the blood carries oxygen around the body, how it helps to fight infection, the blood vessels, and much more.
Presents a short study of the skeleton and how it works to support the body, and describes how it provides protection for vital organs of the body, how to keep the bones in good shape, and much more.
Presents an introduction to human muscles, in simple text with illustrations, describing what they are, what they do, and how they work in different parts of the body.
Presents a short study of the digestive system and how it breaks down food for all parts of the body, and describes the parts of the digestive system and how it helps the body grow, maintain, and repair itself.
Explains how the respiratory organs work, how oxygen is circulated through the bloodstream and waste is exhaled, and some common breathing difficulties.
