This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 153 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 153 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following helps fight off diseases? A) Red Blood Cells. B) White Blood Cells. C) Platelets. D) None of above. Show Answer Correct Answer: B) White Blood Cells. 2. Red blood cells transport ..... around the body. A) Oxygen. B) Plasma. C) Bones. D) Cardiac muscles. Show Answer Correct Answer: A) Oxygen. 3. What type of blood vessel carries oxygen-poor blood into the heart from the body? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 4. What does the capillary do? A) Carries blood away from the heart. B) Separates oxygen rich from oxygen poor blood. C) Carries the blood to and from the body's cells. D) Carries the blood back into the heart. Show Answer Correct Answer: C) Carries the blood to and from the body's cells. 5. What is the function of the valves found in the heart? A) To pump blood throughout the body. B) To prevent the backflow of blood. C) To oxygenate the blood. D) To produce red blood cells. Show Answer Correct Answer: B) To prevent the backflow of blood. 6. The part of the heart that functions to keep blood from the right chamber (right atrium and right ventricle) does not return to the right atrium is called? A) Mitral valve. B) Tricuspid valve. C) Aortic valve. D) Pulmonary valve. Show Answer Correct Answer: B) Tricuspid valve. 7. What is the heart? A) Muscle. B) Cell. C) Robot. D) Computer. Show Answer Correct Answer: A) Muscle. 8. Oxyhemoglobin is when the oxygen diffuses into the blood as it passes through the body A) True. B) False. Show Answer Correct Answer: B) False. 9. Valve positioned between the right ventricle and the pulmonary artery A) Mitral valve. B) Tricuspid valve. C) Pulmonary valve. D) Aortic valve. Show Answer Correct Answer: C) Pulmonary valve. 10. True or False. You need to care of your muscles and heart. A) True. B) False. Show Answer Correct Answer: A) True. 11. Which of the following best describes platelets? A) A yellow liquid that carries cells, carbon dioxide & soluble food molecules. B) Cells packed with haemoglobin that carries oxygen. C) Cells that fight disease by ingesting pathogens & making antibodies. D) Cells that help blood to clot & help form a scab over a cut. Show Answer Correct Answer: D) Cells that help blood to clot & help form a scab over a cut. 12. Why does pulse rate increase during exercise? A) Oxygen and carbon dioxide must be removed from the body ASAP. B) Gas exchange must happen more quickly than when a person is at rest. C) Oxygen must be moved to the lungs and carbon dioxide must be moved to cells more quickly. D) Carbon dioxide must be moved to the kidneys to be excreted. Show Answer Correct Answer: B) Gas exchange must happen more quickly than when a person is at rest. 13. They carry blood back to the heart A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 14. The Aorta branches off into smaller vessels called A) Arteries. B) Veins. C) Capillaries. D) Venules. Show Answer Correct Answer: A) Arteries. 15. The largest component of blood, making up 40% is the A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: A) Red blood cells. 16. State the function of platelets. A) Join oxygen onto red blood cells. B) Adjust their numbers, thickening or thinning our blood. C) Help our blood clot. D) Line the walls of our blood cells. Show Answer Correct Answer: C) Help our blood clot. 17. Substances in food that our bodies need to work. A) Nutrients. B) Blood. C) Cells. D) None of above. Show Answer Correct Answer: A) Nutrients. 18. What vessel carries/transports oxygenated blood away from the heart? A) Veins. B) Capillaries. C) Arteries. D) Vanes. Show Answer Correct Answer: C) Arteries. 19. How many types of Circulation are there? A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: B) 2. 20. Select the blood vessel that carries (deoxygenated) back to the heart from the body. A) Capillary. B) Artery. C) Vein. D) None of above. Show Answer Correct Answer: C) Vein. ← 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