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Heart - Wikipedia [8] The heart pumps blood with a rhythm determined by a group of pacemaker cells in the sinoatrial node These generate an electric current that causes the heart to contract, traveling through the atrioventricular node and along the conduction system of the heart
Heart | Structure, Function, Diagram, Anatomy, Facts | Britannica Heart, organ that serves as a pump to circulate the blood It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds
Heart Anatomy, Function, and Blood Circulation - WebMD Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life
Heart Anatomy: Labeled Diagram and Quick Reference The anatomy of the human heart starts with understanding each of the four chambers Learn about the upper, lower, right, and left parts of heart anatomy
American Heart Association | To be a relentless force for a world of . . . Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living
How the Heart Works - What the Heart Looks Like | NHLBI, NIH This image shows the four chambers of the heart and the direction that blood flows through the heart Oxygen-poor blood, shown in blue-purple, flows into the heart and is pumped out to the lungs
Cardiology News Opinion – theheart. org | Medscape Cardiology : Welcome to theheart org | Medscape Cardiology, where you can peruse the latest medical news, commentary from clinician experts, major conference coverage, full-text journal articles