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[8] the heart pumps blood with a rhythm determined by a group of pacemaker cells in the sinoatrial node The heart is a mostly hollow, muscular organ composed of cardiac muscles and connective tissue that acts as a pump to distribute blood throughout the body’s tissues. 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, organ that serves as a pump to circulate the blood It functions as a muscle that pumps blood nonstop and sends oxygen and nutrients to other organs. 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.

Your heart is the main organ of your cardiovascular system, a network of blood vessels that pumps blood throughout your body.

Learn about the heart's anatomy, how it functions, blood flow through the heart and lungs, its location, artery appearance, and how it beats. This image shows the four chambers of the heart and the direction that blood flows through the heart 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.

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. Your heart is an essential organ in your body

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