What is the main function of the cardiovascular system?, To digest food, To transport blood and oxygen, To help the body grow hair, Which part of the heart pumps blood to the lungs?, Right ventricle, Left atrium, Left ventricle, Which blood vessels carry blood away from the heart?, Veins, Capillaries, Arteries, What is the name of the tiny blood vessels where oxygen exchange happens?, Capillaries, Arteries, Valves, Which side of the heart carries oxygen-rich blood?, Right side, Left side, Both sides equally, What do veins do?, Carry blood away from the heart, Carry blood toward the heart, Pump blood through the body, Which chamber of the heart receives oxygenated blood from the lungs?, Right atrium, Right ventricle, Left atrium, What is the purpose of heart valves?, To clean the blood, To stop blood from flowing backward, To produce oxygen, What happens to blood in the lungs?, It becomes thicker, It picks up oxygen, It loses oxygen, Which blood vessel is the largest artery in the body?, Pulmonary vein, Vena cava, Aorta

Cardiovascular system

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