This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 568 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 568 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the ventricles empty, this is known as: A) Diastole. B) Systole. C) Systemic. D) Thump thump. Show Answer Correct Answer: B) Systole. 2. Where do nutrients get diffused into the bloodstream? A) Trachea. B) Esophagus. C) Villi. D) Alveoli. E) Epiglottis. Show Answer Correct Answer: C) Villi. 3. The variable the is changed on purpose is ..... A) Constant. B) Control. C) Independent Variable. D) Dependent Variable. Show Answer Correct Answer: C) Independent Variable. 4. Is your pulse rate always the same? A) Yes. B) No. Show Answer Correct Answer: B) No. 5. In the presence of thrombin, the blood protein fibrinogen is converted into an insoluble protein called ..... It forms a soft network in which the red blood cells and plasma get entangled. The resulting jellylike red mass is clot A) Fibrin. B) Thrombocytes. C) Phagocytes. D) Lymph. Show Answer Correct Answer: A) Fibrin. 6. The circulatory system in humans is similar to that of frogs, and earthworms because ..... A) It is a closed system. B) It is an open system. C) Humans are cold blooded. D) None of the above. Show Answer Correct Answer: A) It is a closed system. 7. Which of he following layers of the heart and their function are correctly matched? A) Epicardium-protective inner layer of the heart chambers and valves. B) Myocardium-cardiac muscle tissue that pumps blood our of the heart chambers. C) Endocardium-protective outer coating. D) Pericardium-protective inner lining of the heart chambers. Show Answer Correct Answer: B) Myocardium-cardiac muscle tissue that pumps blood our of the heart chambers. 8. How does a red blood cell attach oxygen to itself? A) With plasma. B) With hemoglobin. C) With erythrocytes. D) With platelets. Show Answer Correct Answer: B) With hemoglobin. 9. Which structure does NOT belong to the circulatory system? A) Heart. B) Lungs. C) Blood Vessels. D) Blood. Show Answer Correct Answer: B) Lungs. 10. Which tube carries oxygen to the lungs and known as the windpipe? A) Esophagus. B) Epiglottis. C) Alveoli. D) Trachea. Show Answer Correct Answer: D) Trachea. 11. A disorder relating to the valves of the heart might be classified as A) A heart attack. B) A heart murmur. C) A stroke. D) A bummer. Show Answer Correct Answer: B) A heart murmur. 12. The cilia in the nasal cavity: A) Produce sticky mucus. B) Moisten the air taken in. C) Trap dust from the air. D) Sweep away trapped particles. Show Answer Correct Answer: D) Sweep away trapped particles. 13. Why was Sidney out of breath and why did her arms and legs hurt during gym class? A) Because she did a lot of push-ups and squats before class started. B) Because she doesn't take care of her muscles and heart. C) Because she was arm wrestling Mr. Josh before class started. D) None of above. Show Answer Correct Answer: B) Because she doesn't take care of her muscles and heart. 14. Which of the following does NOT belong to the circulatory system? A) Heart. B) Blood. C) Blood vessels. D) Esophagus. Show Answer Correct Answer: D) Esophagus. 15. TRUE or FALSEBlood vessels are the tubes that carry blood from the heart to all parts of the body. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 16. All arteries carry oxygenated blood away from the heart EXCEPT: A) Pulmonary arteries. B) The aorta. C) Arterioles. D) Trick question-none do. Show Answer Correct Answer: A) Pulmonary arteries. 17. True or False:Arteries bring blood back to the heart? A) True. B) False. Show Answer Correct Answer: B) False. 18. Blood provides the body with ..... A) Food & waste. B) Air & water. C) Oxygen & nutrients. D) Muscles & bones. Show Answer Correct Answer: C) Oxygen & nutrients. 19. During this stage, bone growth occurs at growth plates. A) Infancy. B) Childhood. C) Adulthood. D) None of above. Show Answer Correct Answer: B) Childhood. 20. What is the center of the Circulatory System? A) The lungs. B) The heart. C) The blood vessels. D) The arteries. Show Answer Correct Answer: B) The heart. ← 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