How Your Heart Works

The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, the heart's electrical system and blood supply. Read more about how this amazing organ works.

Blood Supply HowStuffWorks

Anatomy and Function of the Heart's Electrical System

How the Normal Heart Works Children's Hospital of Philadelphia

How Does Your Heart Work?

Structure and Function of the Heart

How the Healthy Heart Works

How your heart works

How a healthy heart works, Heart and Stroke Foundation

How Your Heart Works, Helping Your Heart

How Your Heart Works (How It Works): : Myerson, Ralph M.: 9781562762384: Books

How the Heart Works Froedtert & the Medical College of Wisconsin

How the Healthy Heart Works