This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 66 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 66 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. State True or False:Arteries are made up of thinner walls and veins are made up of Thicker walls. A) True. B) False. C) Cant Say. D) None of above. Show Answer Correct Answer: B) False. 2. The heart is the shape of our closed fist A) True. B) False. Show Answer Correct Answer: A) True. 3. Structure(s) that keep the blood flowing in one direction. A) Valves. B) Villi. C) Cilia. D) Bronchioles. Show Answer Correct Answer: A) Valves. 4. Artery wall are thick. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 5. What are the bottom two chambers of the heart called? A) Valves. B) Atria. C) Ventricles. D) Aorta. Show Answer Correct Answer: C) Ventricles. 6. Right side of the heart is high in A) O2. B) H. C) C. D) Ill. Show Answer Correct Answer: D) Ill. 7. A person with type A blood can safely receive ..... A) Type A only. B) Type A and B. C) Type A and O. D) Type AB and Type O. Show Answer Correct Answer: C) Type A and O. 8. A thick substance that forms to stop bleeding A) Clot. B) Heartbeat. C) Arteries. D) Veins. Show Answer Correct Answer: A) Clot. 9. What returns in the veins to the lungs for the body to get rid of? A) Oxygen. B) Helium. C) Gold. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 10. What is the name of the problem that causes a fatty build up in the walls of blood vessels? A) Atherosclerosis. B) Heart failure. C) Angina. D) Stroke. Show Answer Correct Answer: A) Atherosclerosis. 11. How many components are in our blood? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 12. What is the color of oxygen-rich blood? A) Red. B) Blue. C) Green. D) Yellow. Show Answer Correct Answer: A) Red. 13. The systemic circuit ..... A) Picks up oxygen and releases carbon dioxide. B) Drops off oxygen and picks up carbon dioxide. C) Provides blood to lung tissue only. D) Makes your skin red when you get hot. Show Answer Correct Answer: B) Drops off oxygen and picks up carbon dioxide. 14. The largest artery which carries pure blood away from heart A) Pulmonary artery. B) Pulmonary vein. C) Superior venacava. D) Aorta. Show Answer Correct Answer: D) Aorta. 15. What vocabulary word means an iron-containing protein that binds chemically to oxygen molecules? A) Leukocytes. B) Plasma. C) Red blood cells. D) Hemoglobin. Show Answer Correct Answer: D) Hemoglobin. 16. What is the function of the heart? A) Protects organs and produces red blood cells. B) Generates heat. C) Breaks down food into nutrients. D) The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows. Show Answer Correct Answer: D) The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows. 17. This organelle makes useable energy for the cell A) Chloroplast. B) Mitochondria. C) Ribosome. D) Nucleolus. Show Answer Correct Answer: B) Mitochondria. 18. What does a QRS wave represent? A) Atria contract. B) Ventricles contract. C) Ventricles relax and reset. D) None of above. Show Answer Correct Answer: B) Ventricles contract. 19. What kind of blood enters the left side of the heart? A) Oxygenated. B) Deoxygenated. Show Answer Correct Answer: A) Oxygenated. 20. What Von Belmont concluded his experiments? What did Van Helment conclude through his experiments? A) Plants gain their weight by absorption of water. Plants increase their weight by absorbing water. B) Plants get their weight from soil Plants absorb E from soil and increase their weight with it. C) Plants won't get their weight Plants won't gain their weight. D) All the above. Show Answer Correct Answer: A) Plants gain their weight by absorption of water. Plants increase their weight by absorbing water. ← 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