This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 144 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 144 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What keeps blood flowing in the right direction in the heart? A) Atria. B) Chambers. C) Valves. D) Veins. Show Answer Correct Answer: C) Valves. 2. What type of blood vessel has valves? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: B) Vein. 3. What happens to oxygen in the blood as it reaches the body cells? A) It is removed by the body's cells and replaced with carbon dioxide. B) It is transported to the heart for distribution to other organs. C) It is converted into energy for the body. D) It is stored in the liver for future use. Show Answer Correct Answer: A) It is removed by the body's cells and replaced with carbon dioxide. 4. Just as roads take cars to houses, ..... channel blood to cells. A) Arteries. B) Capillaries. C) Vessels. D) Veins. Show Answer Correct Answer: B) Capillaries. 5. Which part of the respiratory system ..... give the oxygen to blood A) Nose. B) Trachea. C) Air sacs. D) Heart. Show Answer Correct Answer: C) Air sacs. 6. What is the structure shown in the image? A) Human heart. B) Amphibian heart. C) Reptile heart. D) Bird heart. Show Answer Correct Answer: B) Amphibian heart. 7. Each red blood cell contains a protein called hemoglobin. A) True. B) False. Show Answer Correct Answer: A) True. 8. Define Vein A) The muscular organ of an animal that pumps blood throughout the body. B) Blood vessels that carry blood toward the heart. C) A chamber in an organism's heart that pumps blood out of the body. D) A blood vessesl that carries blood away from the body. Show Answer Correct Answer: B) Blood vessels that carry blood toward the heart. 9. What are the constituents of blood? A) Plasma, platelets, leucocytes, red blood cells. B) Plasma, platelets, leucocytes, veins. C) Plasma, platelets, leucocytes, arteries. D) Plasma, platelets, capillary, red blood cells. Show Answer Correct Answer: A) Plasma, platelets, leucocytes, red blood cells. 10. The feeling something pushing our fingers if we keep them at wrist. The pushing thing is known as ..... A) Heart beat. B) Beat. C) Pulse. D) All the above. Show Answer Correct Answer: C) Pulse. 11. Why might you become ill after visiting a friend who is sick with the flu? A) The room your friend was in was too warm. B) You ate the same kind of food your friend ate. C) You did not dress properly. D) The virus that causes the flu entered your body. Show Answer Correct Answer: D) The virus that causes the flu entered your body. 12. It takes 1 hour for blood to circulate to every cell in the body. A) True. B) False. Show Answer Correct Answer: B) False. 13. The inferior vena cava delivers blood back from the ..... A) Head. B) Chest. C) Upper Body. D) Lower Body. Show Answer Correct Answer: D) Lower Body. 14. Which system works together with the circulatory system to provide body cells with oxygen? A) Skeletal. B) Respiratory. C) Digestive. D) Excretory. Show Answer Correct Answer: B) Respiratory. 15. Also called the throat A) Larynx. B) Pharynx. C) Trachea. D) Epiglottis. Show Answer Correct Answer: B) Pharynx. 16. Erythrocytes are ..... A) Red Blood Cells. B) White Blood Cells. C) Platelets. D) Plasma. Show Answer Correct Answer: A) Red Blood Cells. 17. Choose the characteristics of capillaries. A) Have very thick, strong, elastic walls. B) Have thin walls, made up of onlyone layer of cells. C) Have thinner walls, large space inside the vessels. D) None of above. Show Answer Correct Answer: B) Have thin walls, made up of onlyone layer of cells. 18. Which is most likely a consequence for the circulatory system when maintaining a diet high in fat and cholesterol? A) Irregular bowel movements and clogged intestines caused by undigested food particles. B) Respiratory distress caused by a collapsed trachea or collapsed lungs. C) Interruptions in the flow of blood because of clogged arteries. D) Loss of arms or legs because of complications from diabetes. Show Answer Correct Answer: C) Interruptions in the flow of blood because of clogged arteries. 19. The capillaries leaving the cells join together to form slightly larger blood vessels called ..... A) Arterioles. B) Veins. C) Venules. D) Arteries. Show Answer Correct Answer: C) Venules. 20. Aplastic anemia is a result of injury to or destruction of the bone marrow. A) True. B) False. Show Answer Correct Answer: A) True. ← 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