This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 108 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 108 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Heart valve between the left ventricle and the aorta A) Mitral valve. B) Tricuspid valve. C) Capillaries. D) Aortic valve. Show Answer Correct Answer: D) Aortic valve. 2. Which component of blood plays an important role in clotting to prevent "bleeding out" A) Erythrocytes (red blood cells). B) Thrombocytes (platelets). C) Leukocytes (white blood cells). D) Eosinophils. Show Answer Correct Answer: B) Thrombocytes (platelets). 3. Which is the correct path of electrical impulses through the heart? A) SA $\rightarrow$ Purkinje Fibers $\rightarrow$ Bundle Branches $\rightarrow$ AV. B) SA $\rightarrow$ AV $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. C) AV $\rightarrow$ SA $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. D) AV $\rightarrow$ Bundle Branches $\rightarrow$ SA $\rightarrow$ Purkinje Fibers. Show Answer Correct Answer: B) SA $\rightarrow$ AV $\rightarrow$ Bundle Branches $\rightarrow$ Purkinje Fibers. 4. Which blood cells fight with germs or illness? A) Red blood cells. B) White blood cells. Show Answer Correct Answer: B) White blood cells. 5. What does the circulatory system take out from our body? A) Blood. B) Oxygen. C) Nutrients. D) Waste. Show Answer Correct Answer: D) Waste. 6. What are the main organs of the respiratory system that allow us to breathe and for gas exchange to happen? A) Diaphragm. B) Lungs. C) Trachea. D) None of above. Show Answer Correct Answer: B) Lungs. 7. Has A antigens on the surface of the red blood cells and B antibodies in the blood plasma A) Type A. B) Agglutination. C) Antigens. D) Rh grouping system. E) Rh grouping system. Show Answer Correct Answer: A) Type A. 8. In human beings, the duration of cardiac cycle is A) 0.08 seconds. B) 0.5 seconds. C) 0.8 seconds. D) 8.0 seconds. Show Answer Correct Answer: C) 0.8 seconds. 9. What are organs made up of? A) Multiple Organisms. B) Multiple Tissues. C) Multiple Organ Systems. D) None of above. Show Answer Correct Answer: B) Multiple Tissues. 10. Our circulatory system helps us to: A) It supplies oxygen and nutrients to our bodies. B) It helps us to walk, eat, move, stretch, etc. Show Answer Correct Answer: A) It supplies oxygen and nutrients to our bodies. 11. Fluids for circulation in humans..... A) Blood. B) Lymph. C) Both. D) Plasma Plasma. Show Answer Correct Answer: C) Both. 12. What are the purpose of Valves? A) To transport nutrients to the blood. B) To transfer oxygen to the muscles. C) To transfer carbon dioxide to the blood. D) To stop blood flowing backwards. Show Answer Correct Answer: D) To stop blood flowing backwards. 13. Where does our oxygenated blood go to after leaving the heart? A) Your mouth. B) Your lungs. C) Right atrium. D) Your head and body. Show Answer Correct Answer: D) Your head and body. 14. Which organism can find low-oxygen blood mixed with high-oxygen blood? Inside the heart chamber A) Frog shark. B) Bullfrog, Toad. C) Crocodile. D) Myna, blue crab. Show Answer Correct Answer: B) Bullfrog, Toad. 15. When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer? A) Dependent. B) Independent. C) Control. D) Compound. Show Answer Correct Answer: B) Independent. 16. What is the main function of the aorta? A) Clotting blood. B) Producing red blood cells. C) Carrying blood away from the heart. D) Carrying blood to the heart. Show Answer Correct Answer: C) Carrying blood away from the heart. 17. As your heart pushes blood through your body's vessels, blood pushes against the walls of the vessels creating ..... A) Arteries. B) Arteriosclerosis. C) Symptoms. D) Blood pressure. Show Answer Correct Answer: D) Blood pressure. 18. Short artery that subdivides into 3 branches:left gastric artery, splenic artery, & hepatic artery- A) Thoracic aorta. B) Abdominal aorta. C) Celiac trunk. D) Aortic arch. Show Answer Correct Answer: C) Celiac trunk. 19. Arteries generally carry oxygen rich blood away from the heart. A) True. B) False. Show Answer Correct Answer: A) True. 20. Heart is enclosed between..... A) Bicardium. B) Cardiac muscles. C) Pericardium. D) Treicardium. Show Answer Correct Answer: C) Pericardium. ← 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