This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 165 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 165 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. These are blood vessels that carry blood back to the heart A) Bronchioles. B) Veins. C) Arteries. D) Capillaries. Show Answer Correct Answer: B) Veins. 2. A type of vessel wherein the direction of blood flow is away from the heart. A) Vein. B) Artery. C) Capillary. D) None of above. Show Answer Correct Answer: B) Artery. 3. 30% of all carbon dioxide is carried in the blood by hemoglobin. 10% of carbon dioxide is dissolved into the plasma. The majority of carbon dioxide (60%) is carried in the blood as this ion A) Thrombocyte. B) Calcium. C) Iron. D) Bicarbonate. E) Hemoglobin. Show Answer Correct Answer: D) Bicarbonate. 4. When blood is pumped through our arteries, they expand and we feel a A) Pulse. B) Headache. C) Bulge. D) Pain. Show Answer Correct Answer: A) Pulse. 5. Which activity would rate your heart rate the most? A) Running a mile. B) Sitting on the couch. C) Doing lunges. D) Stretching. Show Answer Correct Answer: A) Running a mile. 6. The heart consists of ..... chambers. A) 8. B) 4. C) 6. D) 2. Show Answer Correct Answer: B) 4. 7. Ribs are raised, the diaphragm depresses and lungs ..... A) Deflate. B) Inflate. Show Answer Correct Answer: B) Inflate. 8. Substances that carry by blood. A) Oxygen. B) Waste. C) Antibody. D) All of the answers are correct. Show Answer Correct Answer: D) All of the answers are correct. 9. What do scientists call bacteria and viruses that can make people sick? A) Vaccines. B) Diseases. C) Antibodies. D) Pathogens. Show Answer Correct Answer: D) Pathogens. 10. Blood vessels make up the system that transports ..... and ..... to the body. A) Nutrients and cell walls. B) Nutrients and carbon dioxide. C) Oxygen and nutrients. D) Carbon dioxide and waste materials. Show Answer Correct Answer: C) Oxygen and nutrients. 11. It is a thick walled chambers. A) Ventricles. B) Tricuspid Valve. C) Valve. D) Atria. Show Answer Correct Answer: A) Ventricles. 12. When blood is blocked to the heart, it causes ..... A) High blood pressure. B) A heart attack. C) A stroke. D) Sickle cell anemia. Show Answer Correct Answer: B) A heart attack. 13. I am small fragments of cells, important for blood clotting, what am I? A) Plasma. B) Veins. C) Platelets. D) Arteries. Show Answer Correct Answer: C) Platelets. 14. The only vessel of its type to carry deoxygenated blood is the A) Pulmonary artery. B) Pulmonary vein. C) Superior vena cava. D) Aorta. Show Answer Correct Answer: A) Pulmonary artery. 15. Which of these blood vessels have a lumen that varies with pulse of blood passing through? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 16. What is the name given to the thin structures that make up the phloem? A) Keratin tubes. B) Stomata tubes. C) Sieve tubes. D) Palisade tubes. Show Answer Correct Answer: C) Sieve tubes. 17. Which are the largest chambers of the heart? These pump the blood. A) Atrium. B) Ventricle. C) Aorta. D) None of above. Show Answer Correct Answer: B) Ventricle. 18. Which chambers receive the blood as it comes back to the heart? A) Vena cava. B) Atria. C) Aorta. D) Ventricles. Show Answer Correct Answer: B) Atria. 19. When a patient gets a blood test and has a low platelet count, this indicates that the patient likely has A) Infection. B) A clotting disorder. C) Nothing. D) Cancer. Show Answer Correct Answer: B) A clotting disorder. 20. What is the ventricle? A) The lower chamber on each side of the heart. B) The upper part of the brain. C) The upper chamber on each side of the heart. D) The lower part of the liver. Show Answer Correct Answer: A) The lower chamber on each side of the heart. 21. The bright red color of blood indicates ..... A) Anemia. B) Hemoglobin-carrying oxygen. C) Venous blood. D) Fibrinogen-carrying oxygen. Show Answer Correct Answer: B) Hemoglobin-carrying oxygen. 22. Which animal has only one circuit? A) Fish. B) Amphibian. C) Mammal. D) None of above. Show Answer Correct Answer: A) Fish. 23. What is the system that is made up of the heart, blood, and blood vessels? A) Circulatory System. B) Digestive System. C) Respiratory System. D) Excretory System. Show Answer Correct Answer: A) Circulatory System. 24. What should a diabetic do if their sugar is high? A) Go for a walk. B) Take insulin. C) Drink water. D) Stop breathing. Show Answer Correct Answer: B) Take insulin. 25. It is the movement of blood through thetissues of the heart. A) Coronary Circulation. B) Systemic Circulation. C) Circulation. D) Pulmonary Circulation. Show Answer Correct Answer: A) Coronary Circulation. 26. A red blood cell is called A) Leukocyte. B) Erythrocyte. C) Thrombocyte. D) None of above. Show Answer Correct Answer: B) Erythrocyte. 27. Blood that travels through the ARTERIES has got ..... A) Oxygen. B) To hurry. C) Carbon dioxide. D) None of above. Show Answer Correct Answer: A) Oxygen. 28. The heart has ..... valves. A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: D) 4. 29. Which side of the heart pumps deoxygenated blood? A) Left side. B) Right side. C) None of the above. D) Both sides. Show Answer Correct Answer: B) Right side. 30. What type is the endothelium that lines the blood vessels? A) Squamous. B) Ciliated. C) Cuboid. D) Columnar. Show Answer Correct Answer: A) Squamous. 31. If you were a red blood cell that traveled from a leg muscle cell, what blood vessel would you need to return to the heart through? A) Superior vena cava. B) Inferior vena cava. C) Aorta. D) Left atrium. Show Answer Correct Answer: B) Inferior vena cava. 32. Which is the only artery to carry deoxygenated blood? A) Femoral artery. B) Aorta. C) Subclavian artery. D) Pulmonary artery. Show Answer Correct Answer: D) Pulmonary artery. 33. Choose the INCORRECT one A) The cardiovascular system has a duct. B) The cardiovascular system has a pumping device. C) The lymphatic system lacks a pumping device. D) The lymphatic system has a duct. Show Answer Correct Answer: A) The cardiovascular system has a duct. 34. Pulmonary vein carry ..... A) Deoxygenated blood from the heart to the lung. B) Oxygenated blood from the lung to the heart. Show Answer Correct Answer: B) Oxygenated blood from the lung to the heart. 35. Guess what! The liquid part of your blood has a main component. Can you tell what it is? A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: D) Plasma. 36. Which blood cells defend your body from microorganisms and viruses? A) Platelets. B) Red blood cells. C) White blood cells. D) None of above. Show Answer Correct Answer: C) White blood cells. 37. Which blood vessels carry blood from the various parts of the body back to the heart? A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: C) Veins. 38. Disc-shaped cells that are biconcave in the center. Its main function is to carry gases oxygen and carbon dioxide A) Red blood cells. B) White blood cells. C) Plasma. D) Hemoglobin. Show Answer Correct Answer: A) Red blood cells. 39. What are the tubes called through which blood flows? A) Plasma. B) Tissues. C) Vessels. D) Platelets. Show Answer Correct Answer: C) Vessels. 40. What part of your body do you feel to find your pulse? A) Your chest. B) Underneath your chin. C) Your wrist. D) None of the above. Show Answer Correct Answer: B) Underneath your chin. 41. Which instrument is used to hear heart beat? A) Stethoscope. B) Thermometer. C) Microscope. D) None of these. Show Answer Correct Answer: A) Stethoscope. 42. Which best describes the relationship between the muscular system and the circulatory system? A) The circulatory system produces red blood cells to bring oxygen to the muscles. B) The circulatory system captures carbon dioxide from the air for muscle energy. C) The circulatory system delivers oxygen for muscle energy. D) The circulatory system provides a framework for muscle movement. Show Answer Correct Answer: C) The circulatory system delivers oxygen for muscle energy. 43. Which part of the respiratory system directly exchanges oxygen and carbon dioxide with the blood in the circulatory system? A) Alveoli. B) Bronchi. C) Bronchioles. D) Cilia. Show Answer Correct Answer: A) Alveoli. 44. Pulse rate is calculated per ..... A) Minute. B) Second. C) Hour. D) All the above. Show Answer Correct Answer: A) Minute. 45. What is the main function of veins in the circulatory system? A) Carry blood away from the heart. B) Carry blood towards the heart. 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 blood towards the heart. 46. In what kind of blood vessel is the pulse felt? A) Capillary. B) Vein. C) Lymph. D) Artery. Show Answer Correct Answer: D) Artery. 47. Which of the following would be closest to the size of the human heart? A) A ping pong ball. B) A tennis ball. C) A basketball. D) A volleyball. Show Answer Correct Answer: B) A tennis ball. 48. How many miles of blood vessels are in the average human body? A) 1, 000. B) 10, 000. C) 100. D) 60, 000 miles of blood vessels. Show Answer Correct Answer: D) 60, 000 miles of blood vessels. 49. Platelets are involved in: A) Transportation of oxygen. B) Fighting against germs. C) Blood clotting. D) None of the above. Show Answer Correct Answer: C) Blood clotting. 50. How many chambers make up the heart? A) 6. B) 4. C) 5. D) 2. Show Answer Correct Answer: B) 4. 51. How many leads are on a standard EKG? A) 12. B) 8. C) 14. D) 10. Show Answer Correct Answer: A) 12. 52. This blood vessels take blood from the kidneys back to the heart. A) Renal Artery. B) Hepatic Vein. C) Pulmonary Vein. D) Pulmonary Artery. E) Renal Vein. Show Answer Correct Answer: E) Renal Vein. 53. Blood vessel that carries blood without oxygen away from the heart to your lungs A) Pulmonary artery. B) Wreath. C) Aorta. D) Pulmonary veins. Show Answer Correct Answer: A) Pulmonary artery. 54. ..... are materials that ALLOW heat and electricity to move easily through them. A) Insulators. B) Conductors. Show Answer Correct Answer: B) Conductors. 55. Arteries always carry blood ..... A) That is deoxygenated. B) Away from the heart. C) That is at low pressure. D) That is oxygenated. Show Answer Correct Answer: B) Away from the heart. 56. Which is NOT a function of the nose in the respiratory system? A) Filters air. B) Warms air. C) Transfers oxygen from the air to the blood. D) Moistens air. Show Answer Correct Answer: C) Transfers oxygen from the air to the blood. 57. The heart is a voluntary muscle. A) False. B) True. Show Answer Correct Answer: A) False. 58. ..... circulation provides organs, tissues and cells with blood, so they get oxygen and other nutrients A) Pulmonary. B) Vascular. C) Systemic. D) None of these. Show Answer Correct Answer: C) Systemic. 59. I leave the heart and go to the capillaries so that cells can get the nutrients and oxygen I have for them. * A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: A) Arteries. 60. Complete:Veins..... A) Carry the blood to every part of the body. B) Carry blood back to the heart. C) Connect arteries with capillaires. D) None of above. Show Answer Correct Answer: B) Carry blood back to the heart. ← 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