This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System โ Quiz 105 ๐ Homepage ๐ Download PDF Books ๐ Premium PDF Books Circulatory System Quiz 105 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In the diagram, what do the arrows represent? A) Abiotic relationships. B) Transfer of energy. C) The predator-prey relationship. D) The cycle. Show Answer Correct Answer: B) Transfer of energy. 2. Pressure in the brachial artery when the left ventricle is relaxed and filling with blood. A) Diastolic Blood Pressure. B) Systolic Blood Pressure. Show Answer Correct Answer: A) Diastolic Blood Pressure. 3. The relaxing phase of the cardiac cycle is called. A) Infarction. B) Systole. C) Diastole. D) Bradycardia. Show Answer Correct Answer: C) Diastole. 4. The heart pumps blood to different parts of the body. A) True. B) False. Show Answer Correct Answer: A) True. 5. Which component of blood fights off infection? A) White blood cells. B) Platelets. C) Plasma. D) Red blood cells. Show Answer Correct Answer: D) Red blood cells. 6. Which of the following is not a part of blood? A) RBCs. B) Lymph. C) WBCs. D) Platelets. Show Answer Correct Answer: B) Lymph. 7. Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. A) Lung lobes. B) Capillaries. C) Bronchioles. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 8. In which of the following scenarios does blood have the highest oxygen level? A) Blood enters the left atrium to left ventricle to aorta. B) Blood flows through the body by arteries and then to capillaries. C) Food, nutrients, and oxygen are delivered by diffusion. D) Blood returns to the heart through the inferior vena cava and into the right atrium. Show Answer Correct Answer: A) Blood enters the left atrium to left ventricle to aorta. 9. A woman is running in a race. Which of the following statements are true about the woman as she runs? A. Her blood circulates at a higher rate. B. Her body produces less carbon dioxide. C. Her heart beats faster. D. Her body needs more oxygen. A) A and D only. B) B and C only. C) A, C and D only. D) B, C and D only. Show Answer Correct Answer: C) A, C and D only. 10. These are modified cardiac muscle fibers; Non-contractile and pale staining. A) Desmosomes. B) Gap junctions. C) Fascia adherens. D) Purkinje fibers. Show Answer Correct Answer: D) Purkinje fibers. 11. CABG-a procedure to assist blood flow to the heart by replacing a vessel or bypassing it to redirect blood flow around an obstruction stands for A) Cardiac arteriosclerosis grafting. B) Cardiac arrest bypass grafting. C) Coronary artery bypass grafting. D) Carotid artery bypass grafting. Show Answer Correct Answer: C) Coronary artery bypass grafting. 12. What travels through your veins? A) Oxygen. B) Blood. C) Bones. D) None of above. Show Answer Correct Answer: B) Blood. 13. The heart is enclosed in a double layered membranous sac called A) Pericardium. B) Meninges. C) Pleural membrane. D) None of the above. Show Answer Correct Answer: A) Pericardium. 14. Which of the following represents the circulatory system? A) . B) . C) . D) . Show Answer Correct Answer: A) . 15. When does the oxygen enter the blood? A) In the aorta before it goes through the body. B) In the vena cava. C) In the capalaries. D) In the lungs. Show Answer Correct Answer: D) In the lungs. 16. Which one is NOT a blood type? A) A. B) O. C) C. D) AB. Show Answer Correct Answer: C) C. 17. How many percent is plasma in blood? A) 55%. B) 44%. C) 1%. D) None of above. Show Answer Correct Answer: A) 55%. 18. The circulatory system is made up of blood vessels, What are there? A) Arteries and veins. B) Veins and plasmatic. C) Arteries and blood. D) Arteries. Show Answer Correct Answer: A) Arteries and veins. 19. These cells are disc-shaped and carry oxygen to the body. A) Red blood cells. B) Skin. C) White blood cells. D) Platelets. Show Answer Correct Answer: A) Red blood cells. 20. White blood cells that multiply abnormally is called ..... A) Narrow bone cancer/leukaemia. B) Emphysema. C) Asthma. D) None of above. Show Answer Correct Answer: A) Narrow bone cancer/leukaemia. 21. The ..... pressure of the cardiovascular system is the force of the blood on the arteries when the ventricles relax. A) Atrial. B) Aortic. C) Diastolic. D) Systolic. Show Answer Correct Answer: C) Diastolic. 22. What is NOT true about lymph nodes? A) They filter lymph and become swollen in response to infection. B) They contain a large number of white blood cells. C) They are mainly located around your neck, armpit, & groin. D) They are not important for your survival. Show Answer Correct Answer: D) They are not important for your survival. 23. Which of the following statements is not true for RBCs? A) The cells are biconvex in shape. B) RBCs have an average life span of 120 days. C) RBCs are devoid of nucleus in most of the mammals. D) RBCs are formed in the red bone marrow in the adults. Show Answer Correct Answer: A) The cells are biconvex in shape. 24. From the right ventricle where does the blood go to? A) Aorta. B) Left Ventricle. C) Lungs. D) Left Atrium. Show Answer Correct Answer: C) Lungs. 25. What does the pulmonary vein do? A) Brings oxygen-rich blood from lungs to body. B) Brings oxygen-poor blood from lungs to heart. C) Key organ in circulatory system. D) Brings oxygen-rich blood from lungs to heart. Show Answer Correct Answer: D) Brings oxygen-rich blood from lungs to heart. 26. ..... are the site where substances are exchanged between the blood and body cells. A) Capillaries. B) Cells. C) Arteriole. D) None of above. Show Answer Correct Answer: A) Capillaries. 27. When the heart beats the muscle contracts. A) True. B) False. Show Answer Correct Answer: A) True. 28. At the end of an artery, they split into ..... A) Capillaries. B) Arterioles. C) Venules. D) None of above. Show Answer Correct Answer: B) Arterioles. 29. Identify the organ A) Kidney. B) Heart. C) X. D) None. Show Answer Correct Answer: B) Heart. 30. Component of blood that fights foreign bodies A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: B) White blood cells. 31. ..... is the fluid in which different types of cells are suspended A) Haemoglobin. B) Platelets. C) Plasma. D) White Blood Cells. Show Answer Correct Answer: C) Plasma. 32. The circulation where the flow of blood goes through heart to lungs and back to heart is the A) Pulmonary circulation. B) Coronary circulation. C) Capillaries. D) Systemic circulation. Show Answer Correct Answer: A) Pulmonary circulation. 33. Why does the heart beating producing "lub dub" sound? A) Because the muscles of the heart are contracting. B) Because the heart valves are opening and closing. C) Because the blood are moving in and out of the heart. D) Because the blood are moving in and out of the lungs. Show Answer Correct Answer: B) Because the heart valves are opening and closing. 34. Piercing and sucking type of mouthparts of aphids..... A) Haustoria Haustoria. B) Proboscis proboscis. C) Straw. D) All the above เฐชเฑเฐตเฐจเฑเฐจเฑ. Show Answer Correct Answer: B) Proboscis proboscis. 35. All the other neurons that aren't part of the central nervous system are part of the ..... nervous system A) Inside. B) Outer. C) Pulmonary. D) Peripheral. Show Answer Correct Answer: D) Peripheral. 36. Is this statement true or false:There are two loopsin the circulatory system; the first goes to and from the heart visiting thelungs to collect oxygen and get rid of carbon dioxide.The other loop is much larger and goes to and from the heart buttravels all around the body in between. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 37. An average resting heart rate ranges from: A) 70-80 BPM. B) 40-50 BPM. C) 60-100 BPM. D) 80-90 BPM. Show Answer Correct Answer: C) 60-100 BPM. 38. Which is the blood cell that protects against infections? A) White blood cells. B) Red blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: A) White blood cells. 39. Inferior is which end of the heart? A) Base. B) Apex. Show Answer Correct Answer: B) Apex. 40. The right side of your heart pumps blood through your ..... A) Lungs. B) Every other part of your lungs. C) Heart. D) Small intestine. Show Answer Correct Answer: A) Lungs. 41. How much erythrocytes contains in one drop of blood? A) 4.5-5.5 million. B) 4.5-5.5 trillion. C) 4.5-5.5 thousands. D) 4.5-5.5 hundreds. Show Answer Correct Answer: A) 4.5-5.5 million. 42. Heart, blood vessels and blood help us to ..... A) Breathe. B) Digest our food. C) Help to move substances around our body. D) None of above. Show Answer Correct Answer: C) Help to move substances around our body. 43. Which part of the blood helps fight disease? A) Platelets. B) Plasma. C) White blood cells. D) Red blood cells. Show Answer Correct Answer: C) White blood cells. 44. The valve between the left ventricle and aorta is the? A) Bicuspid valve. B) Interventricular septum. C) Aortic semilunar valve. D) Mitral valve. Show Answer Correct Answer: C) Aortic semilunar valve. 45. William Harvey performed the greatest-ever ..... experiments, giving birth to the science of ..... A) Scientific, physiology . B) Art, painting. C) Scientific, biology. D) Medical, Physiology. Show Answer Correct Answer: D) Medical, Physiology. 46. How does the circulatory system contribute to homeostasis? A) By converting glucose into energy. B) By helping control body temperature. C) By absorbing nutrients from food. D) By producing hormones to regulate metabolism. Show Answer Correct Answer: B) By helping control body temperature. 47. The body's defense against infection from various diseases, including..... A) Blood function (6). B) Blood components. Show Answer Correct Answer: A) Blood function (6). 48. These vessels carry blood away from the heart and to the body's cells. A) Tubes. B) Arteries. C) Veins. D) Capillaries. Show Answer Correct Answer: B) Arteries. 49. The structure that prevents backflow of blood in the heart are known as A) Pulses. B) Valves. C) Buttons. D) Ventricles. Show Answer Correct Answer: B) Valves. 50. In which chamber of the heart does oxygenated blood enter from the lungs? A) Left ventricle. B) Left atrium. C) Right atrium. D) Right ventricle. Show Answer Correct Answer: B) Left atrium. 51. Cardiac arrest is caused when the ..... electrical system malfunctions: A) Heart's. B) Lung's. C) Brain's. D) Gallbladder. Show Answer Correct Answer: A) Heart's. 52. Blood full of oxygen will be the color A) Red. B) Green. C) Blue. D) Black. Show Answer Correct Answer: A) Red. 53. Blood in mammals is contains white blood cells (leukocytes) that A) Contain haemoglobin that binds and transports oxygen and carbon dioxide. B) Play roles in the immune system such as engulfing pathogens and producing antibodies. C) Are fragments of cells that prevent blood loss and ensure that blood clots. D) Contains dissolved ions, gasses, proteins and hormones. Show Answer Correct Answer: B) Play roles in the immune system such as engulfing pathogens and producing antibodies. 54. The following are the three most important parts of circulatory system, EXCEPT ONE. A) Stomach. B) Heart. C) Blood vessel. D) Blood. Show Answer Correct Answer: A) Stomach. 55. Which type of blood vessel has valves to keep the blood moving in the right direction? A) Arteries. B) Veins. C) Capillaries. D) All blood vessels. Show Answer Correct Answer: B) Veins. 56. Function of left atrium A) Delivers blood to the left ventricle through the tricuspid valve. B) Delivers blood to the right ventricle through the bicuspid valve. C) Delivers blood to the right ventricle through the tricuspid valve. D) Delivers blood to the left ventricle through the bicuspid valve. Show Answer Correct Answer: D) Delivers blood to the left ventricle through the bicuspid valve. 57. What is the role of platelets in the blood clotting process? A) Transporting oxygen. B) Regulating body temperature. C) Forming clots. D) Producing antibodies. Show Answer Correct Answer: C) Forming clots. 58. Cells use oxygen for energy, and the waste product is ..... A) Carbon dioxide. B) Nitrogen. C) Water. D) Glucose. Show Answer Correct Answer: A) Carbon dioxide. 59. Patient RF, upon seeing her crush, manifests a heart rate of 120 bpm. This phenomenon is commonly coined as " ..... ". A) Medicardia. B) Tachycardia. C) Myocardia. D) Bradycardia. Show Answer Correct Answer: B) Tachycardia. 60. Delivers oxygen to your body cells. A) Lungs. B) Respiratory system. C) Red blood cell. D) White blood cell. Show Answer Correct Answer: C) Red blood cell. 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