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The Circulatory and Respiratory Systems MCQs

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1. What is the main function of the circulatory system?




2. Which organ is primarily responsible for pumping blood throughout the body?




3. What is the function of red blood cells?




4. What gas is absorbed from the lungs into the bloodstream?




5. Which component of blood helps in clotting?




6. What is the main function of the respiratory system?




7. Where does gas exchange occur in the lungs?




8. Which blood vessels carry blood away from the heart?




9. What muscle helps in the process of breathing?




10. What part of the brain controls the breathing rate?




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