This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 93 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 93 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Blood from the right ventricle travels into the ..... A) Small intestine. B) Stomach. C) Lungs. D) Heart. Show Answer Correct Answer: C) Lungs. 2. Doctor:The three main parts in the circulatory system are: A) Organs. B) The kidneys, the capillaries and blood. C) The heart, blood vessels, and blood. D) None of above. Show Answer Correct Answer: C) The heart, blood vessels, and blood. 3. ..... end with blood capillaries. A) Veins. B) Arteries. C) No correct answer. D) Capillaries. Show Answer Correct Answer: B) Arteries. 4. Capillaries connect veins to A) Other capillaries. B) Veins. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. 5. What's the next step after the left atrium? A) Left ventricle. B) Right ventricle. C) Vein. D) Artery. Show Answer Correct Answer: A) Left ventricle. 6. The outer WALL of the heart is called the ..... A) Endocardium. B) Epicardium. C) Pericardium. D) Myocardium. Show Answer Correct Answer: B) Epicardium. 7. Which term represents the amount of blood the heart pumps each beat? A) Heart rate. B) Stroke volume. C) Cardiac output. D) None of above. Show Answer Correct Answer: B) Stroke volume. 8. What is thrombocytopenia? A) When bone marrow makes too few RBCs. B) When bone marrow makes too few WBCs. C) When bone marrow makes too many platelets. D) When bone marrow makes too few platelets. Show Answer Correct Answer: D) When bone marrow makes too few platelets. 9. Which of the following IS NOT a disease or disorder of the respiratory system? A) Emphysema. B) Lung cancer. C) Asthma. D) High blood pressure. Show Answer Correct Answer: D) High blood pressure. 10. Red blood cells carry: A) Nitrogen. B) Sugar. C) Oxygen. D) Water. Show Answer Correct Answer: C) Oxygen. 11. Platelets are responsible for forming clots in the body by secreting ..... to help form clots. A) Vitamin K. B) Clotting Factor. C) Fear Factor. D) Adhesive Factor. Show Answer Correct Answer: B) Clotting Factor. 12. Which of the followig does not belong to the group? A) Veins. B) Diaphragm. C) Alveoli. D) Pharynx. Show Answer Correct Answer: A) Veins. 13. Which of the following is NOT the structure of haemoglobin? A) Each haemoglobin molecule contains 4 haem groups. B) Haemoglobin has a quaternary structure. C) Each haem group in haemoglobin can bind with 4 molecules of oxygen. D) Each haemoglobin molecule has 2 $\alpha$-chain and 2 $\beta$-chain polypeptide subunits. Show Answer Correct Answer: C) Each haem group in haemoglobin can bind with 4 molecules of oxygen. 14. Which of the following describes how blood moves through the 4 chambers of the heart A) Oxygenated blood from the left atria moves to the right ventricle. B) Oxygenated blood from the left atria moves to the left ventricle. C) Deoxygenated blood from the right atria moves to the left ventricle . D) Deoxygenated blood from the left atria moves to the right ventricle. Show Answer Correct Answer: B) Oxygenated blood from the left atria moves to the left ventricle. 15. I contain hemoglobin which attracts oxygen and takes it to your cells. Then hemoglobin takes waste and carbon dioxide to the heart and lungs to get rid of them. A) Plasma. B) White blood cells. C) Red blood cells. D) Platelets. Show Answer Correct Answer: C) Red blood cells. 16. Your heart is ..... A) A body system. B) An organ. C) A nervous system. D) A skeletal system. Show Answer Correct Answer: B) An organ. 17. Can a plant grow fruit if it gets no sunlight? A) Yes. B) Depends on the plant. C) No. D) None of above. Show Answer Correct Answer: C) No. 18. First part of Cardiac Conduction System:This *PACEMAKER* sends action potentials to both atria causing them to contract. A) AV node. B) Sinoatrial (SA) Node. Show Answer Correct Answer: B) Sinoatrial (SA) Node. 19. Why does blood turn dark red as it circulates through the body? A) It starts to clot. B) It gets old and dirty flowing through the body. C) The oxygen in it is replaced by carbon di oxide. D) The farther the blood is from the heart the more darker it is. Show Answer Correct Answer: C) The oxygen in it is replaced by carbon di oxide. 20. Continuous cholesterol build-up on the arterial walls will result to ..... A) Atresia. B) Asphyxia. C) Atherosclerosis. D) Ascariasis. Show Answer Correct Answer: C) Atherosclerosis. 21. Another name for alveoli is ..... A) Ravioli. B) Air sacs. C) Artery sacs. D) Nutrient sacs. Show Answer Correct Answer: B) Air sacs. 22. The human body has both internal and external defense against disease. Which of these includes only internal defenses? A) Hair and inflammation. B) White blood cells and sweat. C) Inflammation and white blood cells. D) Skin and mucus. Show Answer Correct Answer: C) Inflammation and white blood cells. 23. These are the basic functions of circulatory system EXCEPT A) Sensory-transmitting signals. B) Fight off disease. C) Maintain normal body temperature. D) Transport nutrients. Show Answer Correct Answer: A) Sensory-transmitting signals. 24. Cardiovascular system is also known as ..... A) Circulatory System. B) Digestive System. C) Excretory System. D) Nervous System. Show Answer Correct Answer: A) Circulatory System. 25. This fluid is transported back to the circulation (venous side) via the lymph vascular system A) Interstitial fluid. B) Serum. C) Lymph. D) Blood. Show Answer Correct Answer: C) Lymph. 26. The part of our heart separating oxygenated blood from deoxygenated blood is called: A) Bicuspid valve. B) Septum. C) Pericardium. D) Tricuspid valve. Show Answer Correct Answer: B) Septum. 27. How do your nerves work? A) They carry messages back and forth from the brain to the rest of the body. B) The send messages only to the spinal cord. C) They only receive messages from the spinal cord. D) They really don't work. They are lazy and want everything done for them. Show Answer Correct Answer: A) They carry messages back and forth from the brain to the rest of the body. 28. ..... fights off germs and infections A) Plasma. B) Red blood cells. C) White blood cells. D) Platelets. Show Answer Correct Answer: C) White blood cells. 29. The job of the circulatory system is to carry oxigen and nutrients around the body. A) FALSE. B) TRUE. Show Answer Correct Answer: B) TRUE. 30. During a blood typing test, a droplet of blood is found to have both A and B antigens. What is the blood type? A) AB. B) B. C) O. D) A. Show Answer Correct Answer: A) AB. 31. How does the system work? A) Pumps blood from the heart to the lungs to get oxygen. B) Delivers food and other edible thing to the stomach. C) Allows oxygen in the air to be taken into the body. D) None of above. Show Answer Correct Answer: A) Pumps blood from the heart to the lungs to get oxygen. 32. The heart contains four chambers. Which statement below is correct? A) The 2 atriums are in the upper part of the heart and the 2 ventricles are in the bottom. B) One atrium is in the upper part of the heart, and one is in the lower part of the heart. C) There are 3 atriums in the upper part of the heart and 1 ventricle in the bottom. D) The 2 ventricles are in the upper part of the heart. Show Answer Correct Answer: A) The 2 atriums are in the upper part of the heart and the 2 ventricles are in the bottom. 33. What organ removes waste from the body? A) Blood. B) Intestines. C) Kidneys. D) Stomach. Show Answer Correct Answer: C) Kidneys. 34. Blood delivers ..... to all the cells. A) Sucks. B) Oxygen. C) Carbon dioxide. D) Water. Show Answer Correct Answer: B) Oxygen. 35. Which of the following take place when atria of the heart contracts? A) Blood transfer out of the heart. B) Blood enters the heart. C) Blood transfer from ventricle to atrium. D) Blood transfer from atrium to ventricle. Show Answer Correct Answer: D) Blood transfer from atrium to ventricle. 36. Red blood cells contain a protein called hemoglobin that carries A) Oxygen. B) Water. C) Glucose. D) Carbon dioxide. Show Answer Correct Answer: A) Oxygen. 37. Definition of pulmonary: A) Relating to the lungs. B) Relating to the right. C) Relating to the blood. D) Relating to oxygen. Show Answer Correct Answer: A) Relating to the lungs. 38. What do we call the large lymphatic vessels that drain lymph back into the circulatory system? A) Lymph nodes. B) Lymph veins. C) Lymph ducts. D) Lymph capillaries. Show Answer Correct Answer: C) Lymph ducts. 39. The respiratory system is responsible for taking in oxygen. What is the name of the pipe that carries the oxygen from the nose and mouth to the lungs? A) Alvelou. B) Small Intestine. C) Liver. D) Trachea. Show Answer Correct Answer: D) Trachea. 40. Oxygenated blood comes from where? A) Lungs. B) Body. Show Answer Correct Answer: A) Lungs. 41. Communication between two blood vessels A) Anastomosis. B) Venules. C) Thrombosis. D) Areterioles. Show Answer Correct Answer: A) Anastomosis. 42. Which chamber does oxygenated blood enter the heart first? A) Right Atrium. B) Right Ventricle. C) Left Atrium. D) Left Ventricle. Show Answer Correct Answer: C) Left Atrium. 43. The Blood which heart pumps to lungs is A) Deoxygenated blood. B) Oxygenated blood. C) Tissue fluid. D) Lymph fluid. Show Answer Correct Answer: A) Deoxygenated blood. 44. What are the two phases of a heartbeat? A) Systole and Diastole. B) Interphase and Telophase. C) Mitosis and osmosis. D) Green and Red. Show Answer Correct Answer: A) Systole and Diastole. 45. How many percent is red blood cells? A) 55%. B) 44%. C) 1%. D) None of above. Show Answer Correct Answer: B) 44%. 46. Neutrophils and lymphocytes are examples of: A) Thrombocytes. B) Platelets. C) Erythrocytes. D) Leukocytes. Show Answer Correct Answer: D) Leukocytes. 47. A clogged artery can lead to a heart attack. A) True. B) False. Show Answer Correct Answer: A) True. 48. Blood pressure increases A) Systole. B) Diastole. Show Answer Correct Answer: A) Systole. 49. What stops the body from bleeding? A) A band-aid. B) Red blood cells. C) Platelets. D) Tape. Show Answer Correct Answer: C) Platelets. 50. The ..... forces the blood into the ....., which pumps it to the lungs through the ..... A) Right atrium, right ventricle, pulmonary artery. B) Right ventricle, right atrium, pulmonary artery. C) Right ventricle, pulmonary artery, right atrium. D) Pulmonary artery, right atrium, right ventricle. Show Answer Correct Answer: A) Right atrium, right ventricle, pulmonary artery. 51. The smallest blood vessels are: A) Veins(orange). B) Arteries (green). C) Capillaries (blue). D) None of above. Show Answer Correct Answer: C) Capillaries (blue). 52. What does the heart sit between in your chest? A) Your spine. B) Your lungs. C) Your torso. D) Your throat. Show Answer Correct Answer: B) Your lungs. 53. A heartbeat is a cycle of CONTRACTION and RELAXATION of our heart muscles. A) True. B) False. Show Answer Correct Answer: A) True. 54. Name the vein which carries deoxygenated blood from the body to the heart heart. A) Vena cava. B) Pulmonary artery. C) Pulmonary vein. D) Aorta. Show Answer Correct Answer: A) Vena cava. 55. Largest artery in the body? A) Arteries. B) Veins. C) Aorta. D) Capillaries. Show Answer Correct Answer: C) Aorta. 56. Stop bleeding and form clothing A) Red blood cells. B) Blood plasma. C) Blood platelets. D) White blood cells. Show Answer Correct Answer: C) Blood platelets. 57. Which organ of the circulatory system pumps blood throughout the body? A) Capillaries. B) Heart. C) Arteries. D) Veins. Show Answer Correct Answer: B) Heart. 58. The exchange of oxygen and carbon dioxide takes place in these vessels. A) Arteries. B) Inferior vena cava. C) Lung capillaries. D) Veins. Show Answer Correct Answer: C) Lung capillaries. 59. How are the diagram and photograph similar? A) Both are illustrations of a heart. B) They both are pictures of a human's lung. C) They are both are from boys. D) They are both real pictures. Show Answer Correct Answer: A) Both are illustrations of a heart. 60. Im the magic healer I help in preventing hair loss by forming blood clots. A) Platelets. B) Veins. C) Valves. D) Heart. Show Answer Correct Answer: A) Platelets. ← 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