This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 49 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When you breathe, your lungs take in ..... and remove ..... A) Carbon dioxide, waste. B) Oxygen, carbon dioxide. C) Air, oxygen. D) Waste, air. Show Answer Correct Answer: B) Oxygen, carbon dioxide. 2. What are the four components of blood? A) Plasma, Capillaries, Veins, Platelets. B) Platelets, Plasma, WBCs, Veins. C) Platelets, WBCs, RBCs, Capillaries. D) Platelets, Plasma, WBCs, RBCs. Show Answer Correct Answer: D) Platelets, Plasma, WBCs, RBCs. 3. Where does the blood first go after leaving the heart? A) To your elbow. B) To the lungs to get oxygen. C) Outside of your body. D) To your brain. Show Answer Correct Answer: B) To the lungs to get oxygen. 4. The number of times your heart beats in 1min (bpm) A) Heart Rate. B) Stroke Volume. C) Cardiac Output. D) None of above. Show Answer Correct Answer: A) Heart Rate. 5. TYPE of blood flow that cycles to the body tissues; allows for oxygen to be distributed to all the cells of the body. A) Pulmonary circulation. B) Systemic circulation. Show Answer Correct Answer: B) Systemic circulation. 6. The diaphragm is a dome-shaped muscle at the base of the rib cage. A) True. B) False. Show Answer Correct Answer: A) True. 7. ..... is an infection within the heart lining A) Endocarditis. B) Cardiomalacia. C) Bradycardia. D) Tachycardia. Show Answer Correct Answer: A) Endocarditis. 8. Which of the following prevents blood in the cardiovascular system from going backward? A) Ventricles. B) Valves. C) Atria. D) Arteries. Show Answer Correct Answer: B) Valves. 9. The right side of the heart pumps blood to your lungs. A) True. B) False. Show Answer Correct Answer: A) True. 10. How many chambers does the human heart contain? A) 2 chambers. B) 1 chamber. C) 4 chambers. D) None of the above. Show Answer Correct Answer: C) 4 chambers. 11. Which blood cells have the job of carrying oxygen around the body. A) White Blood Cells. B) Red Blood Cells. Show Answer Correct Answer: B) Red Blood Cells. 12. The three smaller systems of the circulatory system include all of the following EXCEPT: A) Systemic system. B) Coronary system. C) Pulmonary system. D) Skeletal system. Show Answer Correct Answer: D) Skeletal system. 13. How many layers are in a blood vessel? A) 8. B) 1. C) 3. D) 22. E) 16. Show Answer Correct Answer: C) 3. 14. How many blood cells die every minute A) 4 million. B) 1 thousand. C) 2 million. D) 10. Show Answer Correct Answer: C) 2 million. 15. There are fewer white blood cells than red blood cells. A) False. B) True. Show Answer Correct Answer: B) True. 16. Coronary artery arises directly from the ..... A) Walls of the heart. B) Main artery. C) Pulmonary artery. D) Aorta. Show Answer Correct Answer: D) Aorta. 17. What do we have in our heart that open and close to that blood is allowed to only flow in one direction? A) Chambers. B) Valves. C) Arteries. D) Veins. Show Answer Correct Answer: B) Valves. 18. About how much blood is in your body? A) 5 liters. B) 5 gallons. C) 5 pints. D) 5 quarts. Show Answer Correct Answer: A) 5 liters. 19. Which of the following helps fight off diseases? A) Red Blood Cells. B) White Blood Cells. C) Platelets. D) None of above. Show Answer Correct Answer: B) White Blood Cells. 20. Red blood cells transport ..... around the body. A) Cardiac muscles. B) Oxygen. C) Bones. D) Plasma. Show Answer Correct Answer: B) Oxygen. 21. What type of blood vessel carries oxygen-poor blood into the heart from the body? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 22. What does the capillary do? A) Carries blood away from the heart. B) Separates oxygen rich from oxygen poor blood. C) Carries the blood to and from the body's cells. D) Carries the blood back into the heart. Show Answer Correct Answer: C) Carries the blood to and from the body's cells. 23. What is the function of the valves found in the heart? A) To pump blood throughout the body. B) To oxygenate the blood. C) To produce red blood cells. D) To prevent the backflow of blood. Show Answer Correct Answer: D) To prevent the backflow of blood. 24. The part of the heart that functions to keep blood from the right chamber (right atrium and right ventricle) does not return to the right atrium is called? A) Pulmonary valve. B) Tricuspid valve. C) Aortic valve. D) Mitral valve. Show Answer Correct Answer: B) Tricuspid valve. 25. What is the heart? A) Muscle. B) Robot. C) Computer. D) Cell. Show Answer Correct Answer: A) Muscle. 26. Oxyhemoglobin is when the oxygen diffuses into the blood as it passes through the body A) True. B) False. Show Answer Correct Answer: B) False. 27. Valve positioned between the right ventricle and the pulmonary artery A) Tricuspid valve. B) Mitral valve. C) Aortic valve. D) Pulmonary valve. Show Answer Correct Answer: D) Pulmonary valve. 28. True or False. You need to care of your muscles and heart. A) False. B) True. Show Answer Correct Answer: B) True. 29. Which of the following best describes platelets? A) Cells that help blood to clot & help form a scab over a cut. B) Cells packed with haemoglobin that carries oxygen. C) A yellow liquid that carries cells, carbon dioxide & soluble food molecules. D) Cells that fight disease by ingesting pathogens & making antibodies. Show Answer Correct Answer: A) Cells that help blood to clot & help form a scab over a cut. 30. Why does pulse rate increase during exercise? A) Oxygen and carbon dioxide must be removed from the body ASAP. B) Gas exchange must happen more quickly than when a person is at rest. C) Oxygen must be moved to the lungs and carbon dioxide must be moved to cells more quickly. D) Carbon dioxide must be moved to the kidneys to be excreted. Show Answer Correct Answer: B) Gas exchange must happen more quickly than when a person is at rest. 31. They carry blood back to the heart A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 32. The Aorta branches off into smaller vessels called A) Arteries. B) Capillaries. C) Veins. D) Venules. Show Answer Correct Answer: A) Arteries. 33. The largest component of blood, making up 40% is the A) White blood cells. B) Platelets. C) Red blood cells. D) Plasma. Show Answer Correct Answer: C) Red blood cells. 34. State the function of platelets. A) Join oxygen onto red blood cells. B) Adjust their numbers, thickening or thinning our blood. C) Help our blood clot. D) Line the walls of our blood cells. Show Answer Correct Answer: C) Help our blood clot. 35. Substances in food that our bodies need to work. A) Nutrients. B) Blood. C) Cells. D) None of above. Show Answer Correct Answer: A) Nutrients. 36. What vessel carries/transports oxygenated blood away from the heart? A) Vanes. B) Veins. C) Capillaries. D) Arteries. Show Answer Correct Answer: D) Arteries. 37. How many types of Circulation are there? A) 2. B) 4. C) 3. D) 1. Show Answer Correct Answer: A) 2. 38. Select the blood vessel that carries (deoxygenated) back to the heart from the body. A) Capillary. B) Artery. C) Vein. D) None of above. Show Answer Correct Answer: C) Vein. 39. An organ in the chest that sends blood all around the body A) Heart. B) Pump. C) Blood. D) Capillaries. Show Answer Correct Answer: A) Heart. 40. Group of cells that sends electric currents to the heart and makes sure the heart beats at a steady pace A) Fast. B) Pacemaker. C) Atrium. D) Ventricle. Show Answer Correct Answer: B) Pacemaker. 41. This type of blood cell carries oxygen through the body and determines blood type. A) White blood cells. B) Plasma. C) Red blood cells. D) Platelets. Show Answer Correct Answer: C) Red blood cells. 42. The building blocks of starch are A) Amino acids. B) Sugars. C) Fatty acids. D) Glycerol. Show Answer Correct Answer: B) Sugars. 43. Water composes about ..... percent of the plasma volume. A) 72. B) 51. C) 25. D) 92. Show Answer Correct Answer: D) 92. 44. What is the primary job of red blood cells? A) To fight infections. B) To carry oxygen to all the cells in the body. C) To clot the blood. D) To carry nutrients to cells. Show Answer Correct Answer: B) To carry oxygen to all the cells in the body. 45. The small air sacs that are surrounded by blood vessels are the ..... A) Trachea. B) Alveoli. C) Bronchi. D) Bronchioles. Show Answer Correct Answer: B) Alveoli. 46. The abbreviation for beats per minute A) P. B) Bpm. C) Bp. D) CHF. Show Answer Correct Answer: B) Bpm. 47. True or false. The circulatory system supply blood with oxygen. A) True. B) False. Show Answer Correct Answer: B) False. 48. How many chambers in the heart of a fish? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: D) 2. 49. Which blood vessel carries blue blood? A) Veins. B) Arteries. C) Both. D) Neither. Show Answer Correct Answer: D) Neither. 50. Largest artery in the human body: A) Pulmonary artery. B) Femoral artery. C) Carotid artery. D) Aorta. Show Answer Correct Answer: D) Aorta. 51. What happens to blood in the lungs? A) It mixes with oxygen and is pumped to all cells. B) It returns back to the heart. C) It is carried to and from the heart in tubes. D) It is attacked by white blood cells. Show Answer Correct Answer: A) It mixes with oxygen and is pumped to all cells. 52. The blood vessels that carry oxygenated blood from the lungs to the left atrium. A) Pulmonary vein. B) Aorta. C) Pulmonary artery. D) Vena cava. Show Answer Correct Answer: A) Pulmonary vein. 53. The lung is where gases, such as oxygen and carbon dioxide pass between the ..... and the ..... A) Carbon dioxide and the left side of the heart. B) Atmosphere and the blood. C) Blood vessels and organs. D) Earth's core and the mantle. Show Answer Correct Answer: B) Atmosphere and the blood. 54. How many valves does the heart have? A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: A) 4. 55. What is cartilage? A) Connective tissue that acts as balance for the body. B) A piece of tissue that is attached to the scapula. C) Connective tissue near joints that act as a shock absorber. D) Joints that connect bone to tissue. Show Answer Correct Answer: C) Connective tissue near joints that act as a shock absorber. 56. The name of the process done by the cells in our body to generate energy is ..... A) Respiration. B) Photosynthesis. C) Digestion. D) Excretion. Show Answer Correct Answer: A) Respiration. 57. If you were in the pulmonary artery, what structure would you flow to next? A) Aortic valve. B) Pulmonary vein. C) Right atrium. D) Lungs. Show Answer Correct Answer: D) Lungs. 58. When the heart ....., it fills with blood coming from the veins A) CONTRACTS. B) RELAXES. Show Answer Correct Answer: B) RELAXES. 59. Who is in charge of taking blood from the rest of the body to the heart? A) Veins. B) Arteries. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Veins. 60. This system is important to our circulatory system because this is where makes red blood cells are made A) Nervous. B) Circulatory. C) Respiratory. D) Skeletal. Show Answer Correct Answer: D) Skeletal. ← 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