This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System โ Quiz 46 ๐ Homepage ๐ Download PDF Books ๐ Premium PDF Books Circulatory System Quiz 46 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The smallest blood vessel is A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 2. What does the circulatory system help our blood carry away? A) Helium. B) Carbon dioxide. C) Oxygen. D) Hydrogen. Show Answer Correct Answer: B) Carbon dioxide. 3. How many times does our heart beat per minute? A) 90-100. B) 50-60. C) 80-100. D) 72-80. Show Answer Correct Answer: D) 72-80. 4. When your muscles are fatigued, they are in need of more ....., so your ..... will increase to increase ..... A) Breathing / fatigue / lactic acid. B) Blood flow / oxygen / heart rate. C) Oxygen / heart rate / blood flow. D) Blood flow / carbon dioxide / resting. Show Answer Correct Answer: C) Oxygen / heart rate / blood flow. 5. Vein that carries blood back to the heart from the lungs A) Aortic. B) Hemoglobin. C) Left ventricle. D) Pulmonary. Show Answer Correct Answer: D) Pulmonary. 6. This component of our blood helps fight infection and disease in our body. A) Plasma. B) Platelets. C) Red Blood Cells. D) White Blood Cells. Show Answer Correct Answer: D) White Blood Cells. 7. What organ pushes blood through the circulatory system? A) Heart. B) Blood vessels. C) Atrium. D) Red blood cells. Show Answer Correct Answer: A) Heart. 8. A clot that forms in a blood vessel and is stationary is called a: A) Embolism. B) Thrombus. Show Answer Correct Answer: B) Thrombus. 9. Almost all named veins; contain some vaso vasorum A) Venules. B) Medium veins. C) Large veins. D) None of above. Show Answer Correct Answer: B) Medium veins. 10. Coronary arteries ..... A) Contain deoxygenated blood. B) When clogged, cause a stroke. C) Supply the heart muscle cells with a supply of blood. D) Supply the brain cells with a supply of blood. Show Answer Correct Answer: C) Supply the heart muscle cells with a supply of blood. 11. What is the main organ of our circulatory system? A) Skin. B) Heart. C) Liver. D) Lungs. Show Answer Correct Answer: B) Heart. 12. The fluid between cells is returned to the circulatory system by the A) Lymphatic system. B) Respiratory system. C) Renal system. D) Skeletal system. Show Answer Correct Answer: A) Lymphatic system. 13. ..... blood flows in pulmonary artery rather than other arteries. A) Oxygenated with oxygen. B) Deoxygenated is deoxygenated. C) Mixed. D) All the above เฐชเฑเฐตเฐจเฑเฐจเฑ. Show Answer Correct Answer: B) Deoxygenated is deoxygenated. 14. Which blood vessel carries blood full of oxygen away from the heart? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: A) Artery. 15. The blood drops off ..... in the lungs. A) Blood. B) Oxygen. C) Nutrients. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 16. Blood from lungs will enter the left ventricle first before delivered to all part of our body. A) True. B) False. Show Answer Correct Answer: A) True. 17. What is the primary organ of the circulatory system? A) Arteries. B) Ventricles. C) Lungs. D) Heart. Show Answer Correct Answer: D) Heart. 18. The heart is protected by the ..... A) Skull. B) Ribcage. C) Lungs. D) None of above. Show Answer Correct Answer: B) Ribcage. 19. Which animal is not cold blooded? A) Amphibian. B) Fish. C) Mammal. D) None of above. Show Answer Correct Answer: C) Mammal. 20. The amount of blood pumped from the heart in one beat is A) Cardiac output. B) Resting heart rate. C) Stroke volume. D) Maximum heart rate. Show Answer Correct Answer: C) Stroke volume. 21. Which chamber receives oxygenated blood from the lungs? A) Right ventricle. B) Left atrium. C) Right atrium. D) Left ventricle. Show Answer Correct Answer: B) Left atrium. 22. What is the main structure of the circulatory system? A) Lungs. B) Stomach. C) Brain. D) Heart. Show Answer Correct Answer: D) Heart. 23. Which of the following is true regarding regular cardiorespiratory exercise? A) It reduces the risk of heart disease. B) It always reduces bone mass due to the constant stress of running on concrete. C) It increases risk of diabetes due to having to eat more calories. D) It accelerates aging of the heart due to being over-worked. Show Answer Correct Answer: A) It reduces the risk of heart disease. 24. Our circulatory system is like a huge system of freeways and roads that help transport materials! All the explanations below are for what our circulatory system does to keep us growing and thriving EXCEPT ..... A) To transport carbon dioxide and waste out of cells. B) To make blood cells and special proteins for transport. C) To transport nutrients from the digestive system to tissues and cells. D) To transport oxygen to tissues and cells. Show Answer Correct Answer: B) To make blood cells and special proteins for transport. 25. Which system absorbs oxygen and releases carbon dioxide? A) Respiratory. B) Immune. C) Excretory. D) Endocrine. Show Answer Correct Answer: A) Respiratory. 26. The types of White Blood Cells that has function to produces antibody to fight the infections is ..... A) Lymphocyte. B) Monocyte. C) Basophil. D) Eosinophil. Show Answer Correct Answer: A) Lymphocyte. 27. How many loops does the human circulatory system contain? A) One. B) Four. C) Two. D) Three. Show Answer Correct Answer: C) Two. 28. What keeps blood flowing in the right direction in the heart? A) Atria. B) Veins. C) Valves. D) Chambers. Show Answer Correct Answer: C) Valves. 29. What type of blood vessel has valves? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: B) Vein. 30. What happens to oxygen in the blood as it reaches the body cells? A) It is removed by the body's cells and replaced with carbon dioxide. B) It is transported to the heart for distribution to other organs. C) It is converted into energy for the body. D) It is stored in the liver for future use. Show Answer Correct Answer: A) It is removed by the body's cells and replaced with carbon dioxide. 31. Just as roads take cars to houses, ..... channel blood to cells. A) Capillaries. B) Arteries. C) Veins. D) Vessels. Show Answer Correct Answer: A) Capillaries. 32. Which part of the respiratory system ..... give the oxygen to blood A) Air sacs. B) Nose. C) Trachea. D) Heart. Show Answer Correct Answer: A) Air sacs. 33. What is the structure shown in the image? A) Amphibian heart. B) Reptile heart. C) Human heart. D) Bird heart. Show Answer Correct Answer: A) Amphibian heart. 34. Each red blood cell contains a protein called hemoglobin. A) True. B) False. Show Answer Correct Answer: A) True. 35. What are the constituents of blood? A) Plasma, platelets, leucocytes, veins. B) Plasma, platelets, capillary, red blood cells. C) Plasma, platelets, leucocytes, arteries. D) Plasma, platelets, leucocytes, red blood cells. Show Answer Correct Answer: D) Plasma, platelets, leucocytes, red blood cells. 36. The feeling something pushing our fingers if we keep them at wrist. The pushing thing is known as ..... A) Heart beat. B) Beat. C) Pulse. D) All the above. Show Answer Correct Answer: C) Pulse. 37. Why might you become ill after visiting a friend who is sick with the flu? A) You did not dress properly. B) The room your friend was in was too warm. C) You ate the same kind of food your friend ate. D) The virus that causes the flu entered your body. Show Answer Correct Answer: D) The virus that causes the flu entered your body. 38. It takes 1 hour for blood to circulate to every cell in the body. A) False. B) True. Show Answer Correct Answer: A) False. 39. The inferior vena cava delivers blood back from the ..... A) Chest. B) Head. C) Lower Body. D) Upper Body. Show Answer Correct Answer: C) Lower Body. 40. Which system works together with the circulatory system to provide body cells with oxygen? A) Digestive. B) Excretory. C) Respiratory. D) Skeletal. Show Answer Correct Answer: C) Respiratory. 41. Also called the throat A) Pharynx. B) Trachea. C) Larynx. D) Epiglottis. Show Answer Correct Answer: A) Pharynx. 42. Erythrocytes are ..... A) White Blood Cells. B) Red Blood Cells. C) Platelets. D) Plasma. Show Answer Correct Answer: B) Red Blood Cells. 43. Choose the characteristics of capillaries. A) Have very thick, strong, elastic walls. B) Have thin walls, made up of onlyone layer of cells. C) Have thinner walls, large space inside the vessels. D) None of above. Show Answer Correct Answer: B) Have thin walls, made up of onlyone layer of cells. 44. Which is most likely a consequence for the circulatory system when maintaining a diet high in fat and cholesterol? A) Irregular bowel movements and clogged intestines caused by undigested food particles. B) Respiratory distress caused by a collapsed trachea or collapsed lungs. C) Interruptions in the flow of blood because of clogged arteries. D) Loss of arms or legs because of complications from diabetes. Show Answer Correct Answer: C) Interruptions in the flow of blood because of clogged arteries. 45. The capillaries leaving the cells join together to form slightly larger blood vessels called ..... A) Venules. B) Arteries. C) Veins. D) Arterioles. Show Answer Correct Answer: A) Venules. 46. Aplastic anemia is a result of injury to or destruction of the bone marrow. A) True. B) False. Show Answer Correct Answer: A) True. 47. Which component of blood carries oxygen from the lungs to the body tissues? A) Platelets. B) White blood cells. C) Red blood cells. D) Plasma. Show Answer Correct Answer: C) Red blood cells. 48. What's the name of the vessel that transports oxygenated blood from the lungs to the heart? A) Pulmonary vein. B) Vena Cava. C) Aorta. D) Pulmonary artery. Show Answer Correct Answer: A) Pulmonary vein. 49. This system allows the contracting of muscles to happen and helps the digestive system to digest food. A) Muscular System. B) Nervous System. C) Skeletal System. D) Respiratory System. Show Answer Correct Answer: A) Muscular System. 50. Platelets release a clotting protein into the blood that initiates chemical reaction A) Clot. B) Leukocytes. C) Circulation. D) Fibrin. Show Answer Correct Answer: D) Fibrin. 51. The top chambers of the heart that receive and store blood are called- A) Atria. B) Phalanges. C) Valves. D) Ventricles. Show Answer Correct Answer: A) Atria. 52. What do you call an organ inside the heart that prevents the backflow of blood and ensures that blood flows only in one direction? A) Atrium. B) Ventricles. C) Pericardium. D) Valves. Show Answer Correct Answer: B) Ventricles. 53. Systole and diastole are where, respectively, the heart muscle is ..... A) Contracting and relaxing. B) Relaxing and contracting. C) Contracting and resisting. D) Relaxing and resisting. Show Answer Correct Answer: A) Contracting and relaxing. 54. The force of blood on the walls of blood vessels is called? A) Atherosclerosis. B) Blood pressure. C) Hypertension. D) None of above. Show Answer Correct Answer: B) Blood pressure. 55. ..... are blood cells that carry oxygen and carbon dioxide inside the body A) Platelets. B) Valve. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: C) Red blood cells. 56. What takes blood back to the heart? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 57. A group of organs working together forms a/an A) Molecular system. B) Cell system. C) Tissue system. D) Organ systems. Show Answer Correct Answer: D) Organ systems. 58. Hemoglobin is attached to ..... A) Platelets. B) Plasma. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: C) Red blood cells. 59. Chest pains due to too little O2 to the heart A) Tachycardia. B) Angina. C) Aneurysm. D) Fainting. Show Answer Correct Answer: B) Angina. 60. The right upper chamber of the heart that receives blood returning to the heart A) Right atrium. B) Left ventricle. C) Right ventricle. D) Left atrium. Show Answer Correct Answer: A) Right atrium. โ PreviousNext โRelated 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 ๐ Back to Homepage ๐ Download PDF Books ๐ Premium PDF Books