This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 418 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 418 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Find the mode:10, 11, 8, 14, 12, 8, 4, 5 A) 72. B) 8. C) 9. D) None of above. Show Answer Correct Answer: B) 8. 2. Types of blood vessels: A) Arteries, veins, bronchioles. B) Arteries, veins, neurons. C) Arteries, veins, capillaries. D) Arteries, veins, aorta. Show Answer Correct Answer: C) Arteries, veins, capillaries. 3. Which of the following you should not do to have a healthy heart and lungs? A) Sleep 8 hours a day. B) Exercise regularly. C) Smoke occassionally. D) Observe a balanced diet. Show Answer Correct Answer: C) Smoke occassionally. 4. The largest vein is called ..... A) Vena cava. B) Aorta. C) Atrium. D) Ventricle. Show Answer Correct Answer: A) Vena cava. 5. The function of the respiratory systems is to bring carbon dioxide into the body and to expel oxygen and water vapor. A) True. B) False. Show Answer Correct Answer: B) False. 6. Circulation involving the lungs is called ..... A) Pulmonary Circulation. B) Cutaneous Circulation. C) Systemic Circulation. D) Cardiac Convendency. Show Answer Correct Answer: A) Pulmonary Circulation. 7. Which of the following help us to stop bleeding when we get a cut? A) Platelets. B) Red Blood Cells. C) White Blood Cells. D) Plasma. Show Answer Correct Answer: A) Platelets. 8. Valves are important in the heart because they ..... A) Create the heart beat. B) Are vessels that carry blood. C) Prevent back flow as blood moves through the heart. D) House white blood cells. Show Answer Correct Answer: C) Prevent back flow as blood moves through the heart. 9. Which chamber of the heart receives oxygen-poor blood from the body? A) Left atrium. B) Left ventricle. C) Right atrium. D) Right ventricle. Show Answer Correct Answer: C) Right atrium. 10. What are the organs the fill with air when you breath called? A) Lungs. B) Heart. C) Liver. D) None of above. Show Answer Correct Answer: A) Lungs. 11. Which of these is NOT a feature of the white blood cell? A) Defends the body from infectious organisms. B) Have a nucleus. C) Is smaller than red blood cells. D) Is less in number than the red blood cell. Show Answer Correct Answer: C) Is smaller than red blood cells. 12. It prevents the backflow of blood from the right ventricle to the right artery. A) Tricuspid valve. B) Mitral valve. C) Pulmonary valve. D) Aortic valve. Show Answer Correct Answer: A) Tricuspid valve. 13. Which of the following is NOT a function of plasma? A) Carrying nutrients to the tissues. B) Carrying waste products. C) Generating electrical impulses. D) Distributing body heat. Show Answer Correct Answer: C) Generating electrical impulses. 14. Where are blood cells produced? A) Bone marrow. B) Heart. C) Arteries. D) Veins. Show Answer Correct Answer: A) Bone marrow. 15. Which type of blood cells play a crucial role in the immune system and defense against infections? A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: B) White blood cells. 16. The connective tissue that covers the heart. A) Endocardium. B) Pericardium. C) Myocardium. D) Epicardium. Show Answer Correct Answer: B) Pericardium. 17. Which of the following blood components provide the major defense for our bodies against invading bacteria and viruses? A) Platelets. B) Red Blood Cells. C) White Blood Cells. D) None of above. Show Answer Correct Answer: C) White Blood Cells. 18. Heart Attack Warning Sign:Unusual fatigue for several days. A) Men. B) Women. C) Both. D) None of above. Show Answer Correct Answer: B) Women. 19. The role of the atrioventricular node (AV node) is to A) Initiate a sinus rhythm. B) Conduct impulses to the sinoatrial node (SA node). C) Initiate ventricular depolarization. D) Slow down impulses so that the atria can contract to fill the adjacent ventricles with blood. Show Answer Correct Answer: D) Slow down impulses so that the atria can contract to fill the adjacent ventricles with blood. 20. Capillaries are the largest blood vessel. A) True. B) False. Show Answer Correct Answer: B) False. ← 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