This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 109 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 109 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Blood vessels that carry oxygen rich blood AWAY from the heart. A) Capillaries. B) Veins. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. 2. What is the name of the highway through which blood flows from the heart? A) Veins. B) Aorta. C) Capillaries. D) Arteries. Show Answer Correct Answer: B) Aorta. 3. What is the largest vein in the body A) Jugular. B) Aorta. C) Vena Cava. D) Pulmonary. Show Answer Correct Answer: C) Vena Cava. 4. During gas exchange, oxygen travels into the bronchioles, to the alveoli. The oxygen then diffuses into the capillaries. A) True. B) False. Show Answer Correct Answer: A) True. 5. Which valve sits between the lower left chamber and large artery leading to the body A) Pulmonary. B) Mitral. C) Aortic. D) Tricuspid. Show Answer Correct Answer: C) Aortic. 6. The red color of the blood is due to the presence of the pigment Hemoglobin A) True. B) False. Show Answer Correct Answer: A) True. 7. If the environment gets cold, we will often shiver in order to: A) Regulate blood pressure. B) Keep body temperature the same as the external temperature. C) Decrease body temperature. D) Increase body temperature. Show Answer Correct Answer: D) Increase body temperature. 8. What part of the heart is a "door" that only lets blood flow in one direction? A) Atria. B) Ventricles. C) Valves. D) Arteries. Show Answer Correct Answer: C) Valves. 9. All of these are blood vessels except A) Arteries. B) Lungs. C) Veins. D) Capillaries. Show Answer Correct Answer: B) Lungs. 10. What are the two lower chambers of the heart? A) Atria. B) Ventricles. C) Arteries. D) Veins. Show Answer Correct Answer: B) Ventricles. 11. The circulatory system interacts with the excretory system by A) Carrying absorbed nutrients all around the body. B) Carrying oxygen and carbon dioxide around the body. C) Delivering hormones all around the body. D) Carrying wastes to the kidneys to be filtered out. Show Answer Correct Answer: D) Carrying wastes to the kidneys to be filtered out. 12. What is the link between cardiovascular fitness and cardiac output? A) The greater the cardiac output, the more blood and oxygen can be transported to the working muscles, improving cardiovascular fitness. B) The greater the cardiac output, the less blood and oxygen can be transported to the working muscles, improving cardiovascular fitness. Show Answer Correct Answer: A) The greater the cardiac output, the more blood and oxygen can be transported to the working muscles, improving cardiovascular fitness. 13. The blood vessel that carries oxygenated blood back to the heart A) Vena cava. B) Pulmonary vein. C) Pulmonary artery. D) Hepatic portal vein. Show Answer Correct Answer: B) Pulmonary vein. 14. Name the following:The system in which blood flows from right side of the heart to the lungs and then returns to the left side of the heart A) Pulmonary Circulation. B) Systemic Circulation. C) Double Circulation. D) None. Show Answer Correct Answer: A) Pulmonary Circulation. 15. The excretory system eliminates ..... A) Air. B) Nutrients. C) Waste. D) None of above. Show Answer Correct Answer: C) Waste. 16. This type of vessel carries blood TO the heart: A) Vein. B) Nerve. C) Artery. D) Muscle. Show Answer Correct Answer: A) Vein. 17. Oxygenated blood is mainly found in veins. A) False. B) True. Show Answer Correct Answer: A) False. 18. The liquid part of blood is A) Plasma. B) Red blood cells. C) White blood cells. D) Platelets. Show Answer Correct Answer: A) Plasma. 19. Why is it important for blood to remove waste from cells? A) If waste builds up, you can't find the remote. B) If waste builds up, your blood gets dirty. C) If waste builds up, you'll be too heavy to move. D) If waste builds up, cells can't perform their function. Show Answer Correct Answer: D) If waste builds up, cells can't perform their function. 20. The bottom of the heart at the end of the ventricles is called the A) Base. B) Underneath side. C) Apex. D) Bottom end. Show Answer Correct Answer: C) Apex. 21. Which of the following cells are responsible for fighting diseases? A) Red Blood Cells. B) White Blood Cells. Show Answer Correct Answer: B) White Blood Cells. 22. Ana measured her heart rate when she was resting. It was 80 beats per minute. Immediately after carrying out an activity, she measured her heart rate again. It was 125 beats per minute. Which of the following activities did Ana carry out? A) Switching on the stove. B) Playing badminton with her brother. C) Folding a paper boat. D) Sketching a picture. Show Answer Correct Answer: B) Playing badminton with her brother. 23. What type of antigens can be found on the surface of RBC's when someone has blood type AB? A) A. B) B. C) AB. D) None. Show Answer Correct Answer: C) AB. 24. Which cell releases antibodies to the blood? A) Phagocytes. B) Lymphocytes. C) Platelets. D) None of above. Show Answer Correct Answer: B) Lymphocytes. 25. What percentage of the human body is water? A) 80-90%. B) 50-60%. C) 60-70%. D) 70-80%. Show Answer Correct Answer: C) 60-70%. 26. The time taken for one cardiac cycle is A) 0. 55 seconds. B) 0.65 seconds. C) 0.75 seconds. D) 0.85 seconds. Show Answer Correct Answer: D) 0.85 seconds. 27. The bigger an animal is the ..... its heart rate will generally be. A) Faster. B) Slower. C) Nothing, doesn't matter. D) None of above. Show Answer Correct Answer: B) Slower. 28. Which of the following statement is true about transportation in multicellular organism? A) Has large TSA/V ratio. B) Has size that are usually small and thin. C) The exchange of substance between body and external cannot happen through diffusion. D) The body cells are close to the external environment. Show Answer Correct Answer: C) The exchange of substance between body and external cannot happen through diffusion. 29. Which side of the heart receives and pumps oxygenated blood? A) Right. B) Lower. C) Left. D) Upper. Show Answer Correct Answer: C) Left. 30. T/F-During an average lifetime, the heart pumps enough blood to fill two large ocean tankers. A) True. B) False. Show Answer Correct Answer: A) True. 31. Smaller branches of veins A) VENA CAVA. B) VENULES. C) AORTA. D) ARTERIOLES. Show Answer Correct Answer: B) VENULES. 32. What blood vessel has valves inside of them to help prevent the backflow of blood in the circulatory system? A) Capillaries. B) Arteries. C) Blood cells. D) Veins. Show Answer Correct Answer: D) Veins. 33. LEFT ventricle a A) B 2. B) D 6. C) A 4. D) C 1. Show Answer Correct Answer: C) A 4. 34. This carries and transport oxygen A) W.b.c. B) R.b.c. Show Answer Correct Answer: B) R.b.c. 35. What keeps blood from flowing back into a chamber of the heart? A) Valve. B) Artery. C) Aorta. D) Vein. Show Answer Correct Answer: A) Valve. 36. When the blood vessels' diameter increases and the vessels expand, transporting more blood to the skin. A) Heart rate. B) Vasodilation. C) Vasoconstriction. D) Hypertension. Show Answer Correct Answer: B) Vasodilation. 37. Which of the body's systems is responsible for transporting oxygen rich blood throughout the body? A) The digestive system. B) The respiratory system. C) The circulatory system. D) The skeletal system. Show Answer Correct Answer: C) The circulatory system. 38. What is the main function of the pulmonary artery in the circulatory system? A) Carry oxygenated blood to the body. B) Carry deoxygenated blood to the lungs. C) Involved in the clotting process of the blood following an injury. D) Protect against disease and harmful bacteria; produce antibodies. Show Answer Correct Answer: B) Carry deoxygenated blood to the lungs. 39. What is the name of the AV valve on the right side of the heart? A) Arterial. B) Tricuspid. C) Bicuspid. D) None of above. Show Answer Correct Answer: B) Tricuspid. 40. Define what white blood cells (WBCs) do. A) Yellowish liquid that contains water, nutrients, salts and gases. B) Carry oxygen to the cells and carry carbon dioxide away. C) Attack invading microorganisms. D) Fragments of cells that help with blood clotting; they stop bleeding. Show Answer Correct Answer: C) Attack invading microorganisms. 41. Blood vessels that carry deoxygenated blood (with high levels of carbon dioxide) is called: A) Arteries. B) Veins. C) Capillaries. D) None of the above. Show Answer Correct Answer: B) Veins. 42. What side of the heart has oxygenated blood? A) Left. B) Right. Show Answer Correct Answer: A) Left. 43. True or false:Blood traveling in veins is blue. A) False. B) True. Show Answer Correct Answer: A) False. 44. Our circulatory system comprises our heart, blood vessels, and the blood they contain. A) True. B) False. Show Answer Correct Answer: A) True. 45. Solid part of the blood that helps carry oxygen to the cells A) Plasma. B) Red blood cells. C) White blood cells. D) Platelets. Show Answer Correct Answer: B) Red blood cells. 46. What are RED BLOOD CELLS also called? A) Thrombocytes. B) RBCs. C) RBCs ( Erythrocytes). D) WBCs. Show Answer Correct Answer: C) RBCs ( Erythrocytes). 47. Tachycardia occurs when your heart rate is too ..... while bradycardia occurs when your heart rate is too ..... A) LOW, ERRATIC. B) HIGH, INCONSISTENT. C) HIGH, LOW. D) LOW, HIGH. Show Answer Correct Answer: C) HIGH, LOW. 48. The upper chamber on the left side of the heart A) Artery. B) Left ventricle. C) Vein. D) Left atrium. Show Answer Correct Answer: D) Left atrium. 49. How much exercise should you get each day to keep your heart healthy? A) 24 hrs. B) 1 hr. C) 5 hrs. D) 3 hrs. Show Answer Correct Answer: B) 1 hr. 50. The artery that carries blood from the right ventricle to the lungs A) Ventricle. B) Pulmonary artery. C) Vein. D) Aorta. Show Answer Correct Answer: B) Pulmonary artery. 51. Disorder where too few red blood cells A) Leukemia. B) Cancer. C) Anemia. D) Antigen. Show Answer Correct Answer: C) Anemia. 52. Smallest blood vessels that allow movement of molecules between the blood and our cells A) Capillaries. B) Tendon chords. C) Veins. D) Arteries. Show Answer Correct Answer: A) Capillaries. 53. The patient notices that he has been bruising easily. Labs show his blood clots very slowly. What condition is suspected? A) Thrombus. B) Leukemia. C) Hemophilia. D) Sickle cell anemia. Show Answer Correct Answer: C) Hemophilia. 54. Which segment of the ECG signifies the SA node's (atria) "firing" or electrical event? A) P Wave. B) T Wave. C) QRS Complex. D) Z margin. Show Answer Correct Answer: A) P Wave. 55. The hollow, muscular organ that has walls made of strong muscle is called your ..... A) Lung. B) Kidneys. C) Liver. D) Heart. Show Answer Correct Answer: D) Heart. 56. Composed of a protein called heme, which binds oxygen and is an iron-containing protein in red blood cells A) Erythropoiesis. B) Erythrocytes (RBCs). C) Erythrocytes (RBCs). D) Hemoglobin. E) Neutrophil. Show Answer Correct Answer: D) Hemoglobin. 57. What is the iron-rich protein molecule that binds to oxygen in the blood? A) Hemoglobin. B) Platelets. C) Veins. D) None of above. Show Answer Correct Answer: A) Hemoglobin. 58. What is the meaning of the term oxygenated? A) Low in oxygen. B) Full of oxygen. C) Releasing oxygen. D) Needing oxygen. Show Answer Correct Answer: B) Full of oxygen. 59. Which of the following is not valve of the heart. A) Tricuspid valve. B) Bicuspid valve. C) Cuspid valve. D) None of these. Show Answer Correct Answer: C) Cuspid valve. 60. Stroke is caused by ..... A) Blood clots. B) Blood clots. C) Lack of nutrition. D) Lack of nutrition. Show Answer Correct Answer: A) Blood clots. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books