This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 63 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 63 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements best describes xylem's function in the plant? A) Transpports water and minerals up from the roots to the rest of the plant. B) Transports food down from the leaves to the rest of the plant. C) Transports water and minerals down from the roots to the rest of the plant. D) Transports food up from the leaves to the rest of the plant. Show Answer Correct Answer: A) Transpports water and minerals up from the roots to the rest of the plant. 2. When you breathe in air, you bring oxygen into your lungs and blow out ..... ? A) Carbon dioxide. B) Carbon monoxide. C) Hydrogen. D) Oxygen. Show Answer Correct Answer: A) Carbon dioxide. 3. Pump is to heart as circulating fluid is to ..... A) Valves. B) Blood. C) Pipes. D) Blood vessels. E) Water. Show Answer Correct Answer: B) Blood. 4. Which is one of the 3 WALLS of the heart? A) Pericardium. B) Myocardium. C) Parietal pericardium. D) Visceral pericardium. Show Answer Correct Answer: B) Myocardium. 5. Need of circulatory system in multicellular organisms ..... A) No need. B) To overcome the load of substances to be circualted. C) To overcome unnecessary late in transportation of substances. D) All the above. Show Answer Correct Answer: C) To overcome unnecessary late in transportation of substances. 6. Which list correctly orders the terms from least complex to most complex? A) Heart-circulatory system-bird-cardiac muscle cell. B) Circulatory system-cardiac muscle cell-heart-bird. C) Bird-cardiac muscle cell-circulatory system-heart. D) Cardiac muscle cell-heart-circulatory system-bird. Show Answer Correct Answer: D) Cardiac muscle cell-heart-circulatory system-bird. 7. Why does gas exchange in the capillaries and not the veins/arteries? A) Capillaries have thicker walls. B) Capillaries have thinner walls. C) Capillaries are better. D) Capillaries are larger. Show Answer Correct Answer: B) Capillaries have thinner walls. 8. This type of blood cell is responsible for fighting against infection, parasites, and bacteria, as well as producing antibodies which fight and remember germs. A) Red Blood Cells. B) White Blood Cells. C) Platelets. D) Macrophages. Show Answer Correct Answer: B) White Blood Cells. 9. This allows us to develop an artificial immunity to a disease without ever getting sick from the disease. A) Antibiotics. B) Vaccines. C) Blood transfusions. D) None of above. Show Answer Correct Answer: B) Vaccines. 10. A thin flap of tissue that acts like a one-way door A) Atria. B) Ventricles. C) Valve. D) Septum. Show Answer Correct Answer: C) Valve. 11. What layer of the heart muscle is 2nd most superficial? A) Epicardium. B) Myocardium. C) Endocardium. D) Pericardium. Show Answer Correct Answer: A) Epicardium. 12. The largest artery is called ..... A) Aorta. B) Vena cava. C) Atrium. D) Ventricle. Show Answer Correct Answer: A) Aorta. 13. Several organs that work together make up A) Organs. B) Cells. C) Organ system. D) Circulatory system. Show Answer Correct Answer: C) Organ system. 14. The "semilunars" include A) Mitral and tricuspid. B) Aortic and pulmonary. C) Bicuspid and aortic. D) Tricuspid and pulmonary. Show Answer Correct Answer: B) Aortic and pulmonary. 15. IDENTIFY PART F A) PULMONARY VEINS. B) RIGHT ATRIUM. C) BICUSPID VALVE. D) RIGHT ATRIUM. E) TRICUSPID VALVE. Show Answer Correct Answer: A) PULMONARY VEINS. 16. The heart is enclosed in a double layered membrane called A) Pericardium membrane. B) Pericardial membrane. C) Pleural membrane. D) None of the above. Show Answer Correct Answer: A) Pericardium membrane. 17. Which of the following is the second stop along the electrical conduction pathway? A) Because of the difference. B) Bundle of His. C) AV Node. D) Purkinje Fibers. Show Answer Correct Answer: C) AV Node. 18. Which of the following is the function of the capillaries? A) Breaks down food into nutrients. B) Sends signals to the brain. C) Pumps blood to the rest of the body. D) Delivers oxygen to the cells and collects CO2 waste. Show Answer Correct Answer: D) Delivers oxygen to the cells and collects CO2 waste. 19. When the heart contracts blood is pushed into tubes called what? A) Blood straws. B) Nerves. C) Blood vessels. D) Blood veins. Show Answer Correct Answer: C) Blood vessels. 20. Which of these valves is on the left side of the heart? A) Tricuspid. B) Atrium. C) Bicuspid. D) Ventricle. Show Answer Correct Answer: C) Bicuspid. ← 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