Left ventricle - Large chamber that pumps oxygenated blood around the body, Right atrium - Chamber that receives deoxygenated blood from the vena cava, Right ventricle - Chamber of the heart that pumps deoxygenated blood to the lungs, Left atrium - Chamber of the heart that receives oxygenated blood back from the lungs, Atrioventricular valves - Structures that prevent the backflow of blood from the ventricles to the atria, Semilunar valves - Structures that prevent the backflow of blood into the ventricles when they relax, Vena cava - Large veins that return deoxygenated blood to the right side of the heart, Pulmonary veins - Blood vessels that carry oxygenated blood back to the left side of the heart, Coronary arteries - Blood vessels that supply the heart muscle with oxygen and nutrients, Pacemaker - Specialised tissue in wall of right atrium that controls the heartbeat, Coronary heart disease - Condition that occurs due to the narrowing of the coronary arteries, Angioplasty - Medical procedure in which a metal cage is inserted into a coronary artery,

IGCSE The heart pairs

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