respiratory system

Describes the structures and functions of the respiratory and circulatory systems, including the lungs and airways, blood cells, the heart, arteries, veins, capillaries, pulmonary circulation and the lymphatic system.

Simple text, photographs, and diagrams introduce the respiratory system and its purpose, parts, and functions.

Describes the organs of the respiratory system and their functions and discusses the consequences of disease and prolonged abuse on this vital system.