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How Your Heart WorksC³mo funciona su coraz³n

How Your Heart Works

Your heart is a pumping muscle that works nonstop to keep your body supplied with oxygen-rich blood. Signals from the heart's electrical system set the speed and pattern of the pump's rhythm. Valves keep the blood moving in one direction, through the heart's four chambers.

Illustration of heart

The aorta carries oxygen-rich blood to the body.

The right coronary artery supplies blood to the bottom, right side, and back of the heart muscle.

The pulmonary artery pumps blood to the lungs.

The left coronary artery supplies blood to the front, left side, and back of the heart muscle. It has three parts:

  1. Circumflex coronary artery

  2. Left main coronary artery

  3. Left anterior descending coronary artery

 

Illustration of heart

 

The right atrium receives blood from the body.

The tricuspid valve prevents blood from returning to the atrium.

The right ventricle pumps blood to the lungs for oxygen.

The heart's electrical system is made up of nodes and pathways.

The left atrium receives oxygen-rich blood from the lungs.

The mitral valve prevents blood from returning to the atrium.

The left ventricle pumps oxygen-rich blood to the body.

The aortic valve prevents blood from returning to the ventricle.

The pulmonic valve prevents blood from returning to the ventricle.

 

Publication Source: Texas Heart Institute

Online Source: Texas Heart Institute

Date Last Reviewed:

Date Last Modified: 2006-09-08T00:00:00-06:00

Jay L. Jordan, MD, is an experienced cardiologist and internal medicine physician who provides a comprehensive range of cardiac care services in Beverly Hills, Los Angeles, Santa Monica, Glendale, Burbank, Calabasas and nearby communities. Take the first step in preventing and controlling heart disease with symptoms such as angina, arrhythmias, atrial fibrillation, cardiomyopathy, carotid artery disease, chest pain, congestive heart failure, coronary vascular disease, hypertension, palpitations, shortness of breath and stroke. Call Dr. Jay L. Jordan at 310-854-5493 or request an appointment online.

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