This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 100 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 100 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What disease causes white blood cells to produce in great numbers? A) Agglutination. B) Leukemia. C) Respiration. D) Anemia. Show Answer Correct Answer: B) Leukemia. 2. Which statements are true about human heart?a. The two upper chambers are called ventriclesb. The heart is divided into four chambersc. The right side of the heart contains deoxygenated blood. A) A. and b. only. B) A. and c. only. C) B. and c. only. D) A, b and c. Show Answer Correct Answer: C) B. and c. only. 3. Blood vessels that carry blood back to the heart are called? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 4. ..... is a group of cells that fire electric impulses to initiate the heart contraction and control the pace of the heart. A) Sinovenal node. B) Sinoventricular node. C) Atrioventricular node. D) Sinoatrial node. Show Answer Correct Answer: D) Sinoatrial node. 5. ..... play an important role in fighting infection and destroy germs. A) Blood. B) Plasma. C) White blood cells. D) Red blood cells. Show Answer Correct Answer: C) White blood cells. 6. Ramifications, smaller than veins and arteries, which surround and connect organs A) Heart. B) Arteries. C) Veins. D) Capillaries. E) Circulatory system and its parts. Show Answer Correct Answer: D) Capillaries. 7. The thymus produces cells to fight infection. A) True. B) False. Show Answer Correct Answer: A) True. 8. True or false? Blood in human veins is blue. A) True. B) False. C) It depends on how much the human breathes. D) They are generally green. Show Answer Correct Answer: B) False. 9. Deoxygenated blood means that the blood is low in ..... A) Nutrients. B) Water. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 10. The pathways of blood A) Venules. B) Veins. C) Cartilage. D) All of the above. Show Answer Correct Answer: B) Veins. 11. Normal leukocytes are in the range..... A) 6, 000/ml-12, 000/ml. B) 7, 000/ml-12, 000/ml. Show Answer Correct Answer: A) 6, 000/ml-12, 000/ml. 12. What is the primary function of blood as described in the image? A) To provide structural support to the body. B) To transport nutrients and waste around the body. C) To initiate the clotting process. D) To fight against infections. Show Answer Correct Answer: B) To transport nutrients and waste around the body. 13. What do your valves do? A) They keep blood flowing in one direction. B) They open and shut when your heart pumps. C) They make the sound of your pulse. D) None of above. Show Answer Correct Answer: A) They keep blood flowing in one direction. 14. What is the function of an erythrocyte? A) Fight infection. B) Carry oxygen. C) Clog arteries. D) Blood clotting. Show Answer Correct Answer: B) Carry oxygen. 15. Thickest layer is Tunica Media due to the many layers of elastic lamellae; Thin IEL & EEL; vasa vasorum in adventitia A) Arterioles. B) Muscular arteries. C) Elastic arteries. D) None of above. Show Answer Correct Answer: C) Elastic arteries. 16. The organ wich can oxygenate the blood and remove the waste gases out of your ..... A) Lungs. B) Heart. C) Body. D) Kidneys. E) Spleen. Show Answer Correct Answer: A) Lungs. 17. This disorder is when the red blood cells are shaped like crescents instead of round disks. A) Sickle Cell Anemia. B) Hypertension. C) Anemia. D) Leukemia. Show Answer Correct Answer: A) Sickle Cell Anemia. 18. Vessels that contain valves to prevent back flow of blood are? A) Arteries. B) Aorta. C) Arterioles. D) Veins. Show Answer Correct Answer: D) Veins. 19. Smallest blood vessel; brings nutrients and oxygen to the tissues and absorbs carbon dioxide and waste products A) Capillary. B) Vein. C) Vena cava. D) Artery. Show Answer Correct Answer: A) Capillary. 20. Someone who has Type O blood has what for antibodies? A) No antibodies. B) A antibodies. C) B antibodies. D) A and B antibodies. Show Answer Correct Answer: D) A and B antibodies. 21. What is the purpose of white blood cells in the immune system? A) Transport oxygen throughout the body. B) Produce insulin to regulate blood sugar levels. C) Break down food for digestion. D) Defend the body against infections and foreign substances. Show Answer Correct Answer: D) Defend the body against infections and foreign substances. 22. Circuit of blood that carries blood between the heart and the rest of the body- A) Diastolic pressure. B) Pulmonary circuit. C) Systemic circuit. D) Systolic pressure. Show Answer Correct Answer: C) Systemic circuit. 23. Which of these is true of all veins? A) They are oxygenated. B) They carry blood away from the heart. C) They are deoxygenated. D) They carry blood towards the heart. Show Answer Correct Answer: D) They carry blood towards the heart. 24. How do animals help keep plants alive in an ecosystem? A) Eats them. B) Gives off Carbon Dioxide. C) Nothing. D) Gives off Oxygen. Show Answer Correct Answer: B) Gives off Carbon Dioxide. 25. The ..... arteries carry blood and oxygen to all parts of the heart. A) Coronet. B) Coronary. C) Corridor. D) None of above. Show Answer Correct Answer: B) Coronary. 26. The sites of exchange that allow materials delivered by the blood to enter the tissues are called: A) Arteries. B) Veins. C) Capillaries. D) Plasma. Show Answer Correct Answer: C) Capillaries. 27. Blood moves from arteries to veins through tiny blood vessels called ..... A) Blood. B) Capillaries. C) Veins. D) Oxygen. Show Answer Correct Answer: B) Capillaries. 28. The heart has ..... Chambers, ..... atria, and ..... ventricles. A) 2, 2, and 2. B) 4, 2, and 2. C) 3, 3, and 2. D) 1, 2, and 3. Show Answer Correct Answer: B) 4, 2, and 2. 29. Which disease is hardening of the arteries due to plaque buildup? A) Prolapsed Valves. B) High Blood Pressure. C) Arrhythmia. D) Atherosclerosis. E) Myocardial Infarction. Show Answer Correct Answer: D) Atherosclerosis. 30. A heart rate less than 60 would be considered A) Tachycardia. B) Eucardia. C) Cardiologist. D) Bradycardia. Show Answer Correct Answer: D) Bradycardia. 31. Besides oxygen and carbon dioxide, what else is carried by the blood in the circulatory system? A) Tears. B) Nutrients. C) Nerve impulses. D) Mt. Dew. Show Answer Correct Answer: B) Nutrients. 32. What is the main role of phagocytes? A) Produce T cells. B) Produce B cells. C) Produce antibodies. D) Engulf and digest microorganisms. Show Answer Correct Answer: D) Engulf and digest microorganisms. 33. In which group of organisms, open vascular system is seen? A) Birds. B) Insects. C) Humans. D) Animals. Show Answer Correct Answer: B) Insects. 34. Veins carry ..... to the heart: A) Oxygenated blood (blood with oxygen). B) Deoxygenated blood (blood without oxygen). Show Answer Correct Answer: B) Deoxygenated blood (blood without oxygen). 35. The largest blood vessels of the body which carry oxygen rich blood away from the heart are known as what? A) Veins. B) Arterioles. C) Arteries. D) Capillaries. Show Answer Correct Answer: C) Arteries. 36. TRUE or FALSEThe heart, brain, blood and blood vessels are organs of the circulatory system. A) TRUE. B) FALSE. Show Answer Correct Answer: B) FALSE. 37. A vessel that brings deoxygenated blood toward the heart. A) Vein. B) Artery. C) Capillary. D) None of above. Show Answer Correct Answer: A) Vein. 38. An open circulatory system is one that has: A) No valves present. B) No heart to pump the fluid. C) No vessels at all. D) No distinction between blood and tissue fluid. Show Answer Correct Answer: D) No distinction between blood and tissue fluid. 39. What is the liquid component of blood that carries nutrients, hormones, and waste products? A) Plasma. B) Red blood cells. C) Platelets. D) White blood cells. Show Answer Correct Answer: A) Plasma. 40. ..... passes into the capillaries and is carried away by the blood. A) Oxygen. B) Carbon dioxide. Show Answer Correct Answer: B) Carbon dioxide. 41. Which blood components take action the moment you get a cut? A) Leukocytes (WBC's) to fight any type of foreign invader. B) Platelets to begin to plug the broken blood vessel. C) Plasma proteins to begin the full clotting process. D) All of the above. Show Answer Correct Answer: D) All of the above. 42. This is where gas exchange between the cells and blood takes place. A) Lungs. B) Arterioles. C) Capillaries. D) Venules. Show Answer Correct Answer: C) Capillaries. 43. ..... Valve controls the opening between right atrium and ventricle A) Left ventricular. B) Mitral valve. C) Tricuspid valve. D) Left atrium. Show Answer Correct Answer: C) Tricuspid valve. 44. Stokes or "Brain Attack" A) Can be caused by a ruptured aneurysm or a blood clot. B) Can be caused by a blood clot. C) Can be caused by a myocardial infarction. D) Can be caused by a ruptured aneurysm. Show Answer Correct Answer: A) Can be caused by a ruptured aneurysm or a blood clot. 45. What is this blood type? A) A-. B) AB+. C) A+. D) AB-. Show Answer Correct Answer: A) A-. 46. What antigens are found in A+ blood? A) B and Rh. B) O and RH. C) AB and RH. D) A and RH. Show Answer Correct Answer: D) A and RH. 47. Transport nutrients A) White blood cell. B) Plasma. C) Red blood cell. D) Platelet. Show Answer Correct Answer: B) Plasma. 48. Blood is a red liquid made up of: A) Red blood cells. B) White blood cells. C) Platelets. D) All of the above. E) Non of the above. Show Answer Correct Answer: D) All of the above. 49. Deoxygenated blood flow from the heart to the lungs via ..... A) Vena Cava. B) Aorta. C) Pulmonary artery. D) Pulmonary vein. Show Answer Correct Answer: C) Pulmonary artery. 50. Which of the following are very small vessels that exchange oxygen and nutrients for waste and carbon dioxide from the blood to the cell? A) Arteries. B) Capillaries. C) Veins. D) Platelets. Show Answer Correct Answer: B) Capillaries. 51. These help transport oxygen and contain hemoglobin. A) Red Blood Cells. B) Plasma. C) Platelets. D) White Blood Cells. Show Answer Correct Answer: A) Red Blood Cells. 52. How many tunica layers are in the blood vessels? A) 1. B) 3. C) 2. D) 4. Show Answer Correct Answer: B) 3. 53. The lining of the chambers of the heart is called the A) Endocardium. B) Pericardium. C) Myocardium. D) Epicardium. Show Answer Correct Answer: A) Endocardium. 54. How is called the number of times that the heart pumps? A) Pulse. B) Heart beats. C) Heart rate. D) Pump. Show Answer Correct Answer: C) Heart rate. 55. In which bloodvessel is the bloodpressure the highest A) In veins. B) In other arteries. C) Aorta. D) In capillaries. Show Answer Correct Answer: C) Aorta. 56. Thinnest blood vessel helping the substances diffuse from the wall of small intestine into the blood A) Coronary artery. B) Artery. C) Vein. D) Capillaries. Show Answer Correct Answer: D) Capillaries. 57. True or False:Our heart is a muscle. A) False. B) True. Show Answer Correct Answer: B) True. 58. The ..... RECEIVES blood returning from the lungs through the pulmonary veins. A) Left Ventricle. B) Right Atrium. C) Left Atrium. D) Right Ventricle. Show Answer Correct Answer: C) Left Atrium. 59. If a patient who has Coronary Artery Disease and has an AMI, how are the diseases coded? A) Code both sequence the AMI first. B) Code only the CAD. C) Code Both Sequence the CAD first. D) Code only the AMI. Show Answer Correct Answer: A) Code both sequence the AMI first. 60. What enzyme breaks down protein A) Protease. B) Lipase. C) Carbohydrase. D) Amylase. Show Answer Correct Answer: A) Protease. ← 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