Arteries - carry oxygen-rich blood from your heart to your body’s tissues. The exception is your pulmonary arteries, which go to your lungs., Veins - carry oxygen-poor blood back to your heart., Capillaries - are small blood vessels where your body exchanges oxygen-rich and oxygen-poor blood., Left coronary artery - divides into two branches (the circumflex artery and the left anterior descending artery)., Aortic valve - opens when blood flows out of your left ventricle to your aorta (artery that carries oxygen-rich blood to your body)., Pulmonary valve - opens when blood flows from your right ventricle to your,

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