This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 29 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place? A) Chemical $\rightarrow$ light $\rightarrow$ electrical. B) Mechanical $\rightarrow$ sound $\rightarrow$ light. C) Thermal $\rightarrow$ solar $\rightarrow$ electrical. D) Electrical $\rightarrow$ thermal $\rightarrow$ light. Show Answer Correct Answer: D) Electrical $\rightarrow$ thermal $\rightarrow$ light. 2. Which is the main organ in the respiratory system? A) Heart. B) Stomach. C) Lungs. D) Nose. Show Answer Correct Answer: C) Lungs. 3. What does the heart pump throughout the body? A) Juice. B) Milk. C) Blood. D) None of above. Show Answer Correct Answer: C) Blood. 4. What is the epiglottis? A) The epiglottis is the area where you swallow. B) The eppiglotis holds the wind pipe. Show Answer Correct Answer: A) The epiglottis is the area where you swallow. 5. If you could stretch out all the blood vessels in your body end to end, they would circle the Earth ..... times! A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 6. Oxygen and carbon dioxide are transported between the blood and alveoli by way of A) Exocytosis and endocytosis by endothelial cells. B) Diffusion from areas of higher concentration to lower concentration. C) Pinocytosis using fluid-filled vesicles. D) Active transport (using ATP) by protein carriers of endothelial cells. Show Answer Correct Answer: B) Diffusion from areas of higher concentration to lower concentration. 7. The ..... is a muscle that helps the lungs breathe the air in and out. A) Esophagus. B) Trachea. C) Heart. D) Diaphragm. Show Answer Correct Answer: D) Diaphragm. 8. It works together with the other system to attack pathogens that enters the body. A) Integumentary System. B) Immune System. C) Muscular System. D) Excretory System. Show Answer Correct Answer: B) Immune System. 9. Which of the following is a function of blood? A) Carry saliva to the mouth. B) Transport nutrients and oxygen to cells. C) Excrete salts from the body. D) Feeds vampires. Show Answer Correct Answer: B) Transport nutrients and oxygen to cells. 10. Which of the following occurs during atrial systole? A) Ventricles contract. B) Blood is forced into the ventricles. C) Ventricles and atria relaxed. D) SL valves open. Show Answer Correct Answer: B) Blood is forced into the ventricles. 11. What is the function of valves in the heart? A) To keep the heart pumping. B) To create pressure. C) To prevent back flow of blood. D) To keep the blood warm. Show Answer Correct Answer: C) To prevent back flow of blood. 12. Which blood type is considered to be the "universal recipient" ? A) A. B) B. C) AB. D) O. Show Answer Correct Answer: C) AB. 13. These blood vessels carry blood Away from the Heart A) Arteries. B) Veins. C) Capillaries. D) Atrium. Show Answer Correct Answer: A) Arteries. 14. It carries oxygen-rich blood away from the heart. A) Arteries. B) Veins. C) Capillaries. D) Valve. Show Answer Correct Answer: A) Arteries. 15. The sound "dub" indicates A) Closure of exit valve. B) Closure of entrance vlave. Show Answer Correct Answer: A) Closure of exit valve. 16. The circulatory system has an organ which pumps blood to all parts of the body. Which organ has this function? A) Heart. B) Blood. C) Blood vessels. D) All choices are correct. Show Answer Correct Answer: A) Heart. 17. Pulmonary circulation is the circulation of blood between the heart and the rest of the body. A) True. B) False. Show Answer Correct Answer: B) False. 18. Which type of blood vessel is the thinnest and allows for the transfer of nutrients and oxygen to the cells of the body? (hint:they are very small and gas exchange happens at this level) A) Veins. B) Capillaries. C) Arteries. D) None of above. Show Answer Correct Answer: B) Capillaries. 19. Which blood vessel would have the lowest blood pressure? A) Vena cava. B) Small arteries. C) Small veins. D) Capillaries. Show Answer Correct Answer: A) Vena cava. 20. The blood vessles that collect blood from all body parts and pour it into the heart ..... A) Platelet. B) White blood cells. C) One. D) Red blood cells. Show Answer Correct Answer: C) One. ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books