This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 50 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 50 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Name the largest White Blood Cell? A) Neutrophils. B) Lymphocytes. C) Monocytes. D) None of the above. Show Answer Correct Answer: B) Lymphocytes. 2. The largest artery in the body is the? A) Aorta. B) Carotid artery. C) Superior vena cava. D) Inferior vena cava. Show Answer Correct Answer: A) Aorta. 3. Our its way back to our HEART, blood passes on waste substances to same organs. These waste substances are eventually passed out from our body. When blood reaches our heart again, it is sent to the lungs where CARBON DIOXIDE is removed and WATER is taken in. A) False. B) True. Show Answer Correct Answer: A) False. 4. Which of the 3 blood vessels carries blood back to the heart? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: B) Vein. 5. The patrol agents in the blood are A) Hormones and enzymes. B) Albumins and globulins. C) White blood cells and antibodies. D) Plasma and formed elements. Show Answer Correct Answer: C) White blood cells and antibodies. 6. True or False:Our lungs are a solid mass A) True. B) This is not an answer, don't click here. C) False. D) This is not an answer, don't click here. Show Answer Correct Answer: C) False. 7. What does the Circulatory System consist of? A) Everything in the rib cage. B) Heart, Lungs, Jaw. C) Heart, Blood Vessels, Blood. D) Lungs, Quads, Heart. Show Answer Correct Answer: C) Heart, Blood Vessels, Blood. 8. Aid in coagulation & also known as platelets. A) Thrombocytes. B) Plasma. C) Erythrocytes. D) Leukocytes. Show Answer Correct Answer: A) Thrombocytes. 9. All arteries carry oxygenated blood except ..... A) Vena cava. B) Pulmonary artery. C) Pulmonary veins. D) Aorta. Show Answer Correct Answer: B) Pulmonary artery. 10. How many chambers are there in a heart? A) 4. B) 1. C) 5. D) 0. Show Answer Correct Answer: A) 4. 11. The function of blood plasma is ..... A) To distribute nutrients. B) As antibody. C) To help blood clotting. D) All of the above are correct. Show Answer Correct Answer: D) All of the above are correct. 12. Which of the following is not true about arteries? A) They are under high pressure. B) They have thick walls. C) They have valves. D) They usually carry oxygenated blood. Show Answer Correct Answer: C) They have valves. 13. Which plant tissue transports water and min-erals from the roots to the leaf? A) Parenchyma. B) Xylem. C) Phloem. D) Collenchyma. Show Answer Correct Answer: B) Xylem. 14. Which part of your body is roughly the size of your heart? A) Brain. B) Clenched Fist. C) Feet. D) None of above. Show Answer Correct Answer: B) Clenched Fist. 15. Which of the following is responsible for the red colour of red blood cells? A) Hemoglobin. B) Anemia. C) Oxygen. D) Ill. Show Answer Correct Answer: A) Hemoglobin. 16. The yellow liquid part of blood is called ..... A) White blood cells. B) Platelets. C) Plasma. D) Red blood cells. Show Answer Correct Answer: C) Plasma. 17. Which blood vessel has a one-cell thick wall to allow exchange of substances? A) Artery. B) Vein. C) None of the above. D) Capillary. Show Answer Correct Answer: D) Capillary. 18. How many types of blood vessels are there? A) 3. B) 4. C) 2. D) 6. Show Answer Correct Answer: A) 3. 19. The molecule that allows red blood cells to carry oxygen A) Hemoglobin. B) Arteries. C) Veins. D) Capillaries. Show Answer Correct Answer: A) Hemoglobin. 20. The heart is not a muscle. A) True. B) False. Show Answer Correct Answer: B) False. 21. Which system controls voluntary and involuntary movement? A) Excretory. B) Muscular. C) Immune. D) Skeletal. Show Answer Correct Answer: B) Muscular. 22. Which blood vessel would have the highest blood pressure? A) Vein to the right atrium (vena cava). B) Aorta. C) Small veins. D) Capillaries. Show Answer Correct Answer: B) Aorta. 23. Supplies blood to all body cells and carries away waste. A) Systemic circulation. B) Coronary circulation. C) Pulmonary circulation. D) None of above. Show Answer Correct Answer: A) Systemic circulation. 24. Blood vessels (outside the heart) that contain valves to prevent blood from flowing backwards A) Capillaries. B) Veins. C) Arteries. D) Synapses. Show Answer Correct Answer: B) Veins. 25. Which 2 chambers of the heard contain oxygen-rich blood? A) Left Atrium and Left Ventricle. B) Right Atrium and Right Ventricle. Show Answer Correct Answer: A) Left Atrium and Left Ventricle. 26. What is a pacemaker? A) Electronic device used to help the heart beat regularly. B) To help kidneys filtrate blood. C) To measure your blood pressure. D) None of above. Show Answer Correct Answer: A) Electronic device used to help the heart beat regularly. 27. How many chambers does a bird heart have? A) 6. B) 4. C) 2. D) 1. Show Answer Correct Answer: B) 4. 28. Abnormally increased number of RBCs is called Erythropenia and abnormally decreased number of RBCs is called Polycythaemia. True or False? A) False. B) True. Show Answer Correct Answer: A) False. 29. One complete contraction and relaxation of the heart i.e. complete systole(contraction of ventricles) and diastole(relaxation of ventricles) is A) Blood pressure. B) Heart beat. C) Heart rate. D) Pulse rate. Show Answer Correct Answer: B) Heart beat. 30. In the human body, our ..... system breaks food down into tiny glucose molecules. A) Respiratory. B) Digestive. C) Circulatory. D) Nervous. Show Answer Correct Answer: B) Digestive. 31. What is the name of the system in your body which includes the heart, veins, arteries and capillaries? A) Nervous system. B) Circulatory system. C) Digestive system. D) None of above. Show Answer Correct Answer: B) Circulatory system. 32. In which blood vessels the flow of blood is at low pressure? A) Windpipe. B) Veins. C) Arteries. D) Capillary. Show Answer Correct Answer: B) Veins. 33. Your heart pumps blood from your heart, throughout your entire body through little tubes called ..... A) Veins. B) Arteries. C) Hoses. D) None of above. Show Answer Correct Answer: B) Arteries. 34. In the lungs, the blood gets oxygen and gets rid of carbon dioxide A) True. B) False. Show Answer Correct Answer: A) True. 35. What delivers Oxygen? A) Red blood cells. B) Veins. C) Plasma. D) White blood cells. Show Answer Correct Answer: A) Red blood cells. 36. Which artery normally do we take blood pressure? A) Radial. B) Femoral. C) Coronal. D) Brachial. Show Answer Correct Answer: D) Brachial. 37. Who discovered that the Blood circulates inside the body A) Gleam. B) William Harvey. C) Severus Snape. D) Edward Jenner. Show Answer Correct Answer: B) William Harvey. 38. Which of the following contains nuclei? A) RBCs. B) WBCs. C) THROMBOCYTES. D) None of above. Show Answer Correct Answer: B) WBCs. 39. The first outer layer of heart is? A) Epicardium. B) Bicardium. C) Pericardium. D) None. Show Answer Correct Answer: A) Epicardium. 40. Oxygen and carbon dioxide are exchanged at the cellular level in which type of blood vessel A) Arterioles. B) Veins. C) Arteries. D) Capillaries. Show Answer Correct Answer: D) Capillaries. 41. I am the part of your blood that helps protect you against foreign invaders. I "eat" germs! Who am I? A) Alveoli. B) Platelets. C) Red Blood Cells. D) White Blood Cells. Show Answer Correct Answer: D) White Blood Cells. 42. A drop of blood contains A) 5 million RBCs. B) 5 Billion RBCs. C) 5 Trillion RBCs. D) None of above. Show Answer Correct Answer: A) 5 million RBCs. 43. What heart chambers are connected ti the arteries? A) Ventricles. B) Atria. C) Both. D) None of above. Show Answer Correct Answer: A) Ventricles. 44. The scientific name for high blood pressure is ..... A) Hypertension. B) Heart Attack. C) Stroke. D) Anemia. Show Answer Correct Answer: A) Hypertension. 45. What are two components of the cardiovascular system? A) Arteries and heart. B) Veins and heart. C) Capillaries. D) Heart and blood vessels. Show Answer Correct Answer: D) Heart and blood vessels. 46. This word means heart A) Cardio. B) Valve. C) Vascular. D) Pulmonary. Show Answer Correct Answer: A) Cardio. 47. The chamber of the heart that pumps blood to thedifferent parts of the body is ..... A) Pericardium. B) Septum. C) Lymph nodes. D) Atria. Show Answer Correct Answer: C) Lymph nodes. 48. The most abundant blood component A) Blood juice. B) Red blood cells. C) White blood cells. D) Platelets and blood cells. Show Answer Correct Answer: A) Blood juice. 49. Nerves and blood vessels in the skin are located A) In the fat layer. B) In the dermis. C) In the epidermis. D) Only around the hair follicles. Show Answer Correct Answer: B) In the dermis. 50. Between heart atrium and ventricle, there is automatic valve called ..... A) Heart valve. B) Heart atrium. C) Heart door. D) Heart hall. Show Answer Correct Answer: A) Heart valve. 51. What is the large artery that leaves the heart taking blood to the body? A) Atrium. B) Ventricle. C) Aorta. D) None of above. Show Answer Correct Answer: C) Aorta. 52. Proteins that were discovered on a monkey that make our blood positive or negative are called ..... A) Rh factors. B) Fibrin. C) Hemoglobin. D) None of the above. Show Answer Correct Answer: A) Rh factors. 53. The pulmonary valve regulates blood flow from ..... to ..... A) Pulmonary arteries to R ventricle. B) L ventricle to pulmonary arteries. C) Pulmonary arteries to L ventricle. D) R ventricle to pulmonary arteries. Show Answer Correct Answer: D) R ventricle to pulmonary arteries. 54. IN CHILDREN, HEARTBEAT VARIES FROM ..... TIMES PER MINUTE. A) 90-100. B) 60-80. C) 80-90. D) 10-20. Show Answer Correct Answer: A) 90-100. 55. The muscular organ that pumps blood to all parts of the body. A) Lungs. B) Heart. C) Liver. D) None of above. Show Answer Correct Answer: B) Heart. 56. The wall between the left and right ventricles is called the A) Septic. B) Septum. C) Centennial. D) Apex. Show Answer Correct Answer: B) Septum. 57. The myocardium is composed of: A) An outer fibrous layer and an inner serous layer. B) Cardiac muscle tissue. C) A simple squamous epithelium and a layer of areolar connective tissue. D) None of above. Show Answer Correct Answer: B) Cardiac muscle tissue. 58. A hollow, muscular organ that pumps blood throughout the body. A) Heart. B) Artery. C) Skeleton. D) Vein. Show Answer Correct Answer: A) Heart. 59. Arteries carry ..... A) Oxygenated blood from the heart to all parts of the body. B) Deoxygenated blood to the heart. C) Oxygen rich blood to the heart. D) Carbon dioxide rich blood. Show Answer Correct Answer: A) Oxygenated blood from the heart to all parts of the body. 60. I am the most numerous cells in the blood, transporting oxygen A) Plasma. B) Platelets. C) Red Blood Cells. D) White Blood Cells. Show Answer Correct Answer: C) Red Blood Cells. ← 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