Anatomy | Right Side | Left Side | Interior | Septum | Valves | Conduction | Blood Flow | Coronaries

How your heart works

Your heart is located under the ribcage in the center of your chest between your right and left lungs.A normal, healthy, adult heart is about the size of an average fist:

Heart Projection

Coronary artery disease (CAD) happens when arteries that supply blood to the heart muscle develop a blockage.


Chest pains caused by angina is the heart's response to insufficient blood supply caused by CAD. It is a warning signal that there is not enough blood flow for the needs of that moment. A person with narrowed arteries may develop angina during any activity that increases the heart's demand for blood beyond the available supply.


Try one of our questionnaires to help you better understand your risk for Coronary Artery Disease or take a FREE evaluation of your current treatment plan. Get started by answering the question that best represents your current condition.


The risk results shown in these  questionnaires are estimates only. Your actual risks may or may not be the same as the estimates shown. The answers show the estimated risks of people your same age, gender, and risk factor levels. Every person is different. Your current health status, your medical history and the traits you inherited from your family make you unique.

Here you will find the tools that are used to help make a diagnosis of coronary artery disease.

This category deals with your options for treatment.

Each year, six million adult patients in the U.S. see their doctor because of chest pain.