respiratory system

Describes the respiratory system, including how it works to bring air from the lungs to the rest of the body, why it is important for vital body function, and how to keep the system healthy.

Explains what happens inside the human body when a person breathes, presenting magnified photos and color diagrams, comparing humans to different kinds of animals, and discussing related topics such as speaking, singing, hicupping, yawning, sneezing, and coughing, as well as asthma and smoking.

Presents an introduction to the human respiratory system, explaining what it is and how it works, looking at the role of blood in the respiratory system, and discussing why breathing problems occur.

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

Explains how the parts of the respiration and circulation systems work and illustrates the actions and functions of breathing, talking, the heart, and blood through interesting facts.

Describes the different parts of the body's breathing system, how they work, and how they are affected by pollution, smoking, and asthma.

Presents a detailed look at the respiratory system and its major functions in the human body.

Describes how the human respiratory system works and discusses such related topics as yawning, hiccuping, and coughing.

Discusses the functions and structure of the lungs.

An introduction to the respiratory system and its role in the human body, looking at the throat, windpipe, and lungs, discussing respiratory problems, and offering advice on how to keep lungs healthy.