How a healthy heart works, Heart and Stroke Foundation

Your heart is a muscle that works by contracting and relaxing to pump blood through your body. Learn more about how a healthy heart works from Heart & Stroke.

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Heart and Stroke Foundation - Do Some Good

How your heart works – Heart and circulatory system – British Heart Foundation - BHF

Useful Links - Heart Health Institute

Heart - Wikipedia

Atrium (heart) - Wikipedia

Stay Heart Healthy This February: Tips for Seniors on Managing Heart Disease & Stroke Risk

Human cardiovascular system - Heart Wall, Blood Flow, Circulation

The Heart: Anatomy and 3D Illustrations

How a healthy heart works, Heart and Stroke Foundation

Single Ventricle Defects American Heart Association

Barbados Heart - JOBS - Barbados and the Eastern Caribbean

Circulatory system