Understanding Heart Disease

Heart Health Quiz

Heart-attack deaths have fallen 60 percent in three decades. Still, millions of Americans suffer from cardiovascular diseases linked with heart attacks and strokes.
Heart Disease Risk Factors Clinical Wizard

Heart disease is the leading cause of death in men and women in the United States. Research has found that the risk of developing heart disease not only increases with the number of risk factors, but also with the level of severity of each risk factor. One of the ways you can help prevent heart disease is by knowing your risk factors. Learn more by participating in our Heart Disease Risk Factors Multimedia Interactive Program.

Did You Know?

Your heart has two sides that are separated by an inner wall. The right side pumps blood to the lungs to pick up oxygen. Then, oxygen-rich blood returns from the lungs to the left side of the heart, and the left side pumps it to the body, says the National Heart, Lung and Blood Institute.

Anatomy and Function of the Coronary Arteries
Coronary arteries supply blood to the heart muscle. There are two main coronary arteries: the right and the left.

Anatomy and Function of the Heart Valves
Detailed anatomical description of the heart valves, including simple definitions and a labeled, full-color illustration

Anatomy and Function of the Heart's Electrical System
The heart is a pump made of muscle tissue. Its pumping action is regulated by electrical impulses.

Basic Anatomy of the Heart
Located almost in the center of the chest, the adult human heart is about the size of two fists held side-by-side.

Cardiovascular Disease Statistics
Heart disease is one of the most serious health problems in the United States. Find out more facts and figures on this topic.
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