Presents an introduction to the heart and blood, explaining what they are, how they work, and their function in the human body; looks at some of the illnesses and injuries that can affect the heart and blood; and offers advice on how to keep them healthy.
Describes the role of the heart, how and why the heart circulates blood, how exercise and proper diet can keep the heart strong, what happens during a heart attack, and more.
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.
Discusses how the heart and circulatory system work, the functions of blood, how doctors help people with blood and heart disorders, and how to keep the cardiovascular system healthy through diet and exercise.
