1) What is the main function of the circulatory system? 2) What is the main organ? 3) What are the three types of blood vessels? 4) What are the three types of blood vessels? 5) How many chambers are there in the heart? 6) What is the main organ? 7) How many valves are in the heart? 8) Where does the blood circulate in the pulmonary circulation? 9) Where does the blood circulate in the systemic system? 10) What other system works with the circulatory system? 11) What do capillaries connect? 12) How many chambers are there in the heart? 13) How many valves are in the heart? 14) What is the main function of the circulatory system? 15) What other system works with the circulatory system? 16) Where does the blood circulate in the pulmonary circulation? 17) On a diagram, what color represents the arteries, where blood moves away from the heart to the body? 18) What exchange happens in the capillaries? 19) On a diagram, what color represents the veins, where blood moves towards the heart? 20) Where does the blood circulate in the systemic system?

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