heart - hollow, muscular organ that pumps oxygenated blood throughout the body and deoxygenated blood to the lungs, tricuspid valve - regulates the blood flow between the right atrium and right ventricle, mitral valve - allows oxygen-rich blood from your lungs pass from the left atrium into the left ventricle, aortic valve - manages blood flow from the left ventricle into the aorta, pulmonary valve - manages blood flow out of the right ventricle through the pulmonary trunk into the pulmonary arteries, blood - a fluid that transports oxygen and other essential substances throughout the body, red blood cells/erythrocytes - carry oxygen, nutrients and wastes; produced in the bone marrow; contains hemoglobin, white blood cells/leukocytes - fight diseases and protect the body from infection, plasma - yellowish liquid that carries suspended blood cells and other substances; consists of salts, nutrients, water, electrolytes, enzymes, platelets/thrombocytes - assists in blood clotting, blood vessels - tubes or channels that carry blood throughout our body, arteries - carries blood away from the heart, veins - carries blood back towards the heart, capillaries - assists in the exchange of substances between the blood and tissues; connects arteries and veins,

Parts and Function of the Circulatory System

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