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Heart - CIRCULATORY BLOOD SYSTEM COMPONENTS OF CIRCULATORY...

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BLOOD CIRCULATORY SYSTEM
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COMPONENTS OF CIRCULATORY SYSTEM Heart Blood vessels - arteries, veins, capillaries Blood
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CIRCUITS 1. Pulmonary circuit - right side of heart carries blood to lungs for gas exchange 2. Systemic circuit - left side of heart supplies blood to all organs of the body
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Location of the Heart
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HEART Located in mediastinum , between lungs Epicardium - serous membrane covering heart Myocardium - thick muscular layer of heart wall - provides attachment for cardiac muscle Endocardium - smooth inner lining of heart wall
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Heart Chambers 4 chambers Right and left atria 2 superior chambers receive blood returning to heart Right and left ventricles 2 inferior chambers pump blood into arteries
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HEART VALVES Ensure one-way blood flow Atrioventricular (AV) valves tricuspid valve - between right atrium & ventricle mitral or bicuspid valve - between left atrium & ventricle Chordae tendineae (cords) connect AV valves to
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