This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 137 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 137 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Blood diffuses from the heart to the lungs, TRUE or FALSE. A) False. B) True. Show Answer Correct Answer: A) False. 2. If hypertension is not treated, it can cause permanent damage to the heart, blood vessels, and kidneys. A) False. B) True. Show Answer Correct Answer: B) True. 3. These carry blood towards the heart A) Veins. B) Arteries. Show Answer Correct Answer: A) Veins. 4. What type of blood vessel carries oxygen-rich blood away from the heart to the body? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 5. ..... % of your blood is plasma, 1% is WBC + Platelets, and ..... % is Red Blood Cells. A) 60;40. B) 20; 80. C) 30; 70. D) 55; 45. Show Answer Correct Answer: D) 55; 45. 6. Which of the following is true about the process of exhalation? A) Air pressure in the cavity increases. B) Diaphragm is contracted. C) Air comes into the lungs. D) Space in the pleural cavity increases. Show Answer Correct Answer: A) Air pressure in the cavity increases. 7. The next stop is the A) Tricuspid valve. B) Pulmonary vein. C) Pulmonary valve. D) Pulmonary artery. Show Answer Correct Answer: C) Pulmonary valve. 8. The purpose of the heart valves are to A) Prevent blood from flowing backward. B) Prevent blood from flowing into the lungs. C) Slow the blood as it enters a ventricle. D) Slow the blood as it enters the atria. Show Answer Correct Answer: A) Prevent blood from flowing backward. 9. What is TRUE about the atria and ventricles? A) The atria receive blood from the rest of the body. B) The ventricles push blood out of the heart. C) Atria and ventricles are separated by valves that prevent blood from flowing backward. D) All of the above are true. Show Answer Correct Answer: D) All of the above are true. 10. The job of platelets is A) Protect you from germs. B) Carry oxygen to all parts of the body. C) Eat germs. D) To stop bleeding if you cut your skin. Show Answer Correct Answer: D) To stop bleeding if you cut your skin. 11. The circulatory system is responsible for carrying and transporting oxygen and nutrients throughout the body. A) FALSE. B) TRUE. Show Answer Correct Answer: B) TRUE. 12. What is released by the cells in exchange for oxygen? A) More oxygen. B) Carbon Monoxide. C) Nutrients. D) Carbon Dioxide. Show Answer Correct Answer: D) Carbon Dioxide. 13. Functions of blood? A) Transportation. B) Regulation. C) Protection. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. Spasm of the diaphragm A) Sneeze. B) Hiccup. C) Cough. D) Yawn. Show Answer Correct Answer: B) Hiccup. 15. Is the circulatory system inportent A) False. B) True. Show Answer Correct Answer: B) True. 16. What is the main function of the endothelial cells in capillaries? A) To prevent backflow of low pressure blood. B) To control blood flow by vasoconstriction/vasodilation. C) To link arteries to veins. D) To allow exchange of materials with tissues. Show Answer Correct Answer: D) To allow exchange of materials with tissues. 17. The blood vessels that carry deoxygenated blood to the heart are A) The pulmonary veins. B) The pulmonary arteries. C) The cava veins. D) None of above. Show Answer Correct Answer: C) The cava veins. 18. Specialized cells that trap light on top of the leaf are called ..... cells A) Stomata. B) Root. C) Stem. D) Palisade mesophyll. Show Answer Correct Answer: D) Palisade mesophyll. 19. What is number 1 labelling? A) Right atrium. B) Left ventricle. C) Right ventricle. D) Left atrium. Show Answer Correct Answer: A) Right atrium. 20. How is oxygen transported in the blood? A) Binding to haemoglobin in white blood cells. B) Dissolving in plasma. C) Transported by platelets. D) Binding to haemoglobin in red blood cells. Show Answer Correct Answer: D) Binding to haemoglobin in red blood cells. 21. The part of the heart that sets the pace for cardiac activity and initiates a heartbeat is the: A) Atrioventricular node (AV). B) Bundle of His. C) Sinoatrial node (SA). D) Purkinje Fibers. Show Answer Correct Answer: C) Sinoatrial node (SA). 22. Which of these WBCs releases histamine & is involved in allergic reactions? A) Eosinophil. B) Monocyte. C) Basophil. D) Neutrophil. Show Answer Correct Answer: C) Basophil. 23. The pulmonary vein carries blood from the ..... ? A) Body to the heart. B) Lungs to the body. C) Heart to the lungs. D) Lungs to the heart. Show Answer Correct Answer: D) Lungs to the heart. 24. The ..... fills with blood and then dump into the ..... A) Ventricle /atria. B) Atria / ventricle. Show Answer Correct Answer: B) Atria / ventricle. 25. The CIRCULATORY SYSTEM circulates OXYGEN and removes Carbon Dioxide. A) False. B) True. Show Answer Correct Answer: B) True. 26. In which order does the blood pass from the body through the heart chambers? A) Right atrium-right ventricle-lungs-left atrium-left ventricle. B) Left atrium-right atrium-lungs-left ventricle-right ventricle. C) Left atrium-left ventricle-lungs-right atrium-right ventricle. D) Right atrium-left atrium-lungs-right ventricle-left ventricle. Show Answer Correct Answer: A) Right atrium-right ventricle-lungs-left atrium-left ventricle. 27. Heart is divided vertically into a left and right portion by sectum. A) True. B) False. Show Answer Correct Answer: B) False. 28. What antigens are present in a person with AB-blood? A) A, B, and Rh. B) Rh, only. C) A and B. D) No antigens. Show Answer Correct Answer: C) A and B. 29. Our heart beats quickly when we exercise because it pumps blood quickly. A) False. B) True. Show Answer Correct Answer: B) True. 30. With circulation, the heart provides your body with: A) A way to transport oxygen to body cells. B) A way to transport nutrients to body cells. C) A way to transport carbon dioxide to the lungs. D) All of the above. Show Answer Correct Answer: D) All of the above. 31. All of the following are a part of the circulatory system except A) Veins. B) Capillaries. C) Arteries. D) Lungs. Show Answer Correct Answer: D) Lungs. 32. Cardiac output is calculated by multiplying stroke volume by the systolic blood pressure. A) True. B) False. Show Answer Correct Answer: B) False. 33. What is the term used to describe the cessation of bleeding? A) Hematology. B) Hemostasis. C) Blood Blocker. D) Hemostatic. Show Answer Correct Answer: B) Hemostasis. 34. In the walls of the heart, what do you call the layers of tissue that helps the heart pump blood? A) Cardiac muscle. B) Epicardium. C) Myocardium. D) Endocardium. Show Answer Correct Answer: D) Endocardium. 35. Which contract in unison? A) Top chambers, then bottom chambers. B) Right Chambers, then the Left Chambers. C) All four chambers beat in unison. D) None of above. Show Answer Correct Answer: A) Top chambers, then bottom chambers. 36. The most important function of the heart is that it facilitates the oxygenation of deoxygenated blood so that body organs receive oxygen A) False. B) True. Show Answer Correct Answer: B) True. 37. Arteries carry blood under ..... A) Very low pressure. B) Valves. C) High pressure. D) Lungs. Show Answer Correct Answer: C) High pressure. 38. What causes atherosclerosis? A) Thickening of vessels' wall. B) An increase in blood viscosity. C) Accumulation of fatty materials. D) An increase in blood volume. Show Answer Correct Answer: C) Accumulation of fatty materials. 39. The valves between the right atria and right ventricle is known as the ..... valve. A) Pulmonary valve. B) Aortic valve. C) Bicuspid valve. D) Tricuspid valve. Show Answer Correct Answer: D) Tricuspid valve. 40. What are the parts of the heart and what is the order in that the blood pass? A) R atrium Ventricle Bone Ventricle. B) R AtriumR ventricleL AtriumL Ventricle. C) L VentricleR AtriumR VentricleL Atrium. D) None of above. Show Answer Correct Answer: B) R AtriumR ventricleL AtriumL Ventricle. 41. What are blood vessels that carry blood away from the heart to other parts of the body (oxygenated blood)? A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: A) Arteries. 42. What is the septum's function in the heart? A) To pump blood. B) To refill the atria. C) To separate the left and right sides of the heart. D) To act as a valve. Show Answer Correct Answer: C) To separate the left and right sides of the heart. 43. What is the yellowish liquid part of blood that carries water, nutrients, hormones, dissolved gases and helps to maintain homeostasis within the body? A) Red blood cells. B) White blood cells. C) Plasma. D) None of above. Show Answer Correct Answer: C) Plasma. 44. What part of the brain controls your heart rate? A) Cerebrum. B) Pons. C) Cerebellum. D) Spinal cord elongated. Show Answer Correct Answer: D) Spinal cord elongated. 45. Composed of simple layer of endothelial cells (specialized epithelium) A) Endothelium. B) Subendothelium. C) External Elastic Lamina. D) Internal Elastic Lamina. Show Answer Correct Answer: A) Endothelium. 46. What does an atrium do A) Let blood in. B) Exchange gases. C) Let blood out. D) Remove waste. Show Answer Correct Answer: A) Let blood in. 47. What happens at number 2? A) Blood enters the heart from the lungs. B) Blood goes to the lungs to become oxygenated. C) Blood travels around the body. D) Blood enters the heart from around the body. Show Answer Correct Answer: D) Blood enters the heart from around the body. 48. What organ releases erythropoetin? A) Kidney. B) Bone marrow. C) Liver. D) Brain. Show Answer Correct Answer: A) Kidney. 49. Which of the following is the smallest blood vessel in the circulatory system? A) Vein. B) Capillaries. C) Muscles. D) Artery. Show Answer Correct Answer: B) Capillaries. 50. The heart, veins, capillaries and arteries work together to ..... A) Grow new cells on the skin surface. B) Produce oxygen. C) Produce carbon dioxide. D) Transport materials throughout the body. Show Answer Correct Answer: D) Transport materials throughout the body. 51. What happens when your body gets the wrong type of blood? A) Antibodies check it out. B) Nothing. C) Antibodies attack it immediately to destroy it. D) Trap it. Show Answer Correct Answer: C) Antibodies attack it immediately to destroy it. 52. What is the name of the heart muscle A) Lung muscle. B) Atrium muscle. C) Rib cage. D) Cardiac muscle. Show Answer Correct Answer: D) Cardiac muscle. 53. A patient was diagnosed with a disease which affected the passage of blood from the right atrium to the right ventricle. Which structure is most likely affected? A) Aortic Valve. B) Tricuspid Valve. C) Bicuspid valve. D) Pulmonary Valve. E) Mitral Valve. Show Answer Correct Answer: B) Tricuspid Valve. 54. Which chambers contract during the first part of the Cardiac Cycle? A) Left & right atria. B) Right atrium & ventricle. C) Left atrium & ventricle. D) Left & right ventricles. Show Answer Correct Answer: A) Left & right atria. 55. What is the final destination of the blood in the circulatory system? A) Heart. B) Lungs. C) Brain. D) Arms and legs. Show Answer Correct Answer: A) Heart. 56. Blood passing through the Pulmonary Valve is: A) Deoxygenated. B) Oxygenated. Show Answer Correct Answer: A) Deoxygenated. 57. Ventricles have (blank) walls compared to the atria A) Thinner. B) Thicker. Show Answer Correct Answer: B) Thicker. 58. Vessels that move deoxygenated (low oxygen) are called A) Capillaries. B) Veins. C) Arteries. D) Ventricles. Show Answer Correct Answer: B) Veins. 59. The heart is a very strong ..... A) Lung. B) Stomach. C) Arm. D) Muscle. Show Answer Correct Answer: D) Muscle. 60. What are blood vessels that carry blood from the body back to the heart (de-oxygenated blood)? A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: C) Veins. ← 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