This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 199 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 199 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... are very tiny blood vessels connecting the arteries and veins A) Arteries. B) Capillaries. C) Veins. D) Lungs. Show Answer Correct Answer: B) Capillaries. 2. It is a type of blood vessel that enable the blood to pumped from the heart? A) Arteries. B) Capillary. C) Blood. D) Plasma. Show Answer Correct Answer: A) Arteries. 3. What is the function of plasma in the blood? A) To carry oxygen to the body's tissues. B) To keep the blood moving. C) To fight infections. D) To clot the blood. Show Answer Correct Answer: B) To keep the blood moving. 4. What is the job of the platelets? A) To protect the body against pathogens. B) To carry oxygen around the body. C) To clot the blood. D) To carry substances around the body. Show Answer Correct Answer: C) To clot the blood. 5. What is the main role of lymphocytes? A) Engulf and digest microorganisms. B) Produce antibodies. C) Produce late. D) Clot blood. Show Answer Correct Answer: B) Produce antibodies. 6. Blood coming back from the body enters the heart in what structure? A) Left atrium. B) Right atrium. C) Left ventricle. D) Right ventricle. Show Answer Correct Answer: B) Right atrium. 7. Which blood vessel carries oxygen and nutrients to cells? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 8. The opening and closing of the heart's ..... make the pump sound. A) Atria. B) Ventricles. C) Valves. D) Capillaries. Show Answer Correct Answer: C) Valves. 9. What is the role of the ventricles in the heart? A) To separate the left and right side of the heart. B) To refill with blood while the atria contract. C) To pump blood out of the heart to the body and lungs. D) To prevent blood from flowing backward. Show Answer Correct Answer: C) To pump blood out of the heart to the body and lungs. 10. Whose walls are thinner? A) Veins. B) Arteries. Show Answer Correct Answer: A) Veins. 11. Which blood group is the universal recipient? A) AB. B) B. C) O. D) A. Show Answer Correct Answer: A) AB. 12. What is carried by the blood, that is a requirement for cellular respiration A) Oxygen. B) Carbon dioxide. C) Hormones. D) None of above. Show Answer Correct Answer: A) Oxygen. 13. What blood type has no antigens? A) O. B) A. C) B. D) AB. Show Answer Correct Answer: A) O. 14. CAN RH-POSITIVE DONOR MIXES BLOOD WITH BLOOD OF RH-NEGATIVE RECIPIENT? A) YES. B) NO. Show Answer Correct Answer: B) NO. 15. Type of cell that functions to carry oxygen to tissues: A) Erythrocyte. B) Thrombocyte. C) Leukocyte. D) White Blood Cell. Show Answer Correct Answer: A) Erythrocyte. 16. If your spleen is damaged or removed, other organs in the body take over many of its functions. A) True. B) False. Show Answer Correct Answer: A) True. 17. What actually makes your blood the color red? (Choose the best answer) A) Red Blood Cells. B) Erothrocytes. C) Hemoglobin. D) Iron. Show Answer Correct Answer: C) Hemoglobin. 18. This organ is about the size of a fist A) Lungs. B) Heart. C) Liver. D) Brain. Show Answer Correct Answer: B) Heart. 19. What is the liquid portion of blood known as? A) Platelets. B) Hemoglobin. C) Plasma. D) White blood cells. Show Answer Correct Answer: C) Plasma. 20. Hardening of the arteries- A) Thrombosis. B) Arteriosclerosis. C) Hypotension. D) Hypertension. Show Answer Correct Answer: B) Arteriosclerosis. ← 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