This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 121 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 121 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the thing that you CAN'T find in Colon? A) Undigested food. B) Nutritious food. C) Leftover food. D) Waste. Show Answer Correct Answer: B) Nutritious food. 2. Leukocytes that defend the body against allergic reactions are A) Lymphocytes. B) Eosinophils. C) Basophils. D) Monocytes. Show Answer Correct Answer: B) Eosinophils. 3. When measuring arterial pulse, why is it recommended not to use your thumb: A) The tip of the thumb is too thick to feel the pulse. B) Most people have experienced nerve damage in their thumb and cannot feel the pulse. C) The thumb also has a pulse and can cause counting confusion. D) It is recommended to use your thumb when measuring arterial pulse. Show Answer Correct Answer: C) The thumb also has a pulse and can cause counting confusion. 4. Structure in the dermis of the skin from which a strand of hair grows. A) Dermis. B) Vitamin D. C) Melanin. D) Follicle. Show Answer Correct Answer: D) Follicle. 5. The Contraction of ventricles makes stronger sound or weaker sound? A) Weaker Sound. B) None of these. C) Stronger Sound. D) None of above. Show Answer Correct Answer: C) Stronger Sound. 6. Which muscle is present in the uppermost region of the arm is the common site for the intra muscular injection? A) Tricep. B) Bicep. C) Deltoid. D) None. Show Answer Correct Answer: C) Deltoid. 7. What transports oxygen from our lungs to other parts of the body? A) Air tubes. B) Stomata. C) Gills. D) Blood. Show Answer Correct Answer: D) Blood. 8. The cells that contain hemoglobin which helps carry oxygen are called A) White blood cells. B) Red blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: B) Red blood cells. 9. Where does hematopoiesis take place, producing new RBCs? A) Synovial membrane. B) Red bone marrow. C) Articular cartilage. D) Yellow bone marrow. Show Answer Correct Answer: B) Red bone marrow. 10. Which of the following structures is NOT in the pulmonary circuit? A) Lungs. B) Pulmonary veins. C) Aorta. D) Pulmonary arteries. Show Answer Correct Answer: C) Aorta. 11. One of the most common examples of homeostasis is body temperature. When your body temperature rises above normal, how does your body respond? A) Coughs. B) Shivers. C) Sweats. D) None of above. Show Answer Correct Answer: C) Sweats. 12. What is hypertension? A) High blood pressure. B) High blood oxygen. C) Low blood oxygen. D) Low blood pressure. Show Answer Correct Answer: A) High blood pressure. 13. Where is oxygenated blood found? A) Right atrium and left ventricle. B) Left atrium and left ventricle. C) Right atrium and right ventricle. D) Left atrium and right atrium. Show Answer Correct Answer: B) Left atrium and left ventricle. 14. Blood flows from the right atrium to the right ventricle through this valve A) Mitral valve. B) Pulmonary valve. C) Aortic valve. D) Tricuspid valve. Show Answer Correct Answer: D) Tricuspid valve. 15. Which of the following is NOT a function of the liver? A) Produce bile. B) Provide pumping force for blood. C) Recycle old blood cells. D) Detoxify the blood. Show Answer Correct Answer: B) Provide pumping force for blood. 16. How many pints of blood are in the average human? A) 1. B) 20. C) 10. D) None of above. Show Answer Correct Answer: C) 10. 17. Can the blood cells stay in the body for 3 years? A) Yes!. B) No!. Show Answer Correct Answer: A) Yes!. 18. A blood vessel that takes blood away from the heart to the body's organs is called A) Blood Vessel. B) Capillary. C) Artery. D) Vein. Show Answer Correct Answer: C) Artery. 19. Which of these describes an artery? A) Thin wall, large opening. B) Thick elastic wall, small opening. C) Thick elastic wall, large opening. D) Thin wall, no opening. Show Answer Correct Answer: B) Thick elastic wall, small opening. 20. A pulse is the rhythmic expansion of an artery A) True. B) False. Show Answer Correct Answer: A) True. 21. Which of the following respiratory diseases is characterized by the restriction in the movement of air due to recurring episodes of contractions of the bronchial smooth muscle? A) Lung Cancer. B) Asthma. C) Bronchitis. D) Covid-19. Show Answer Correct Answer: B) Asthma. 22. The large muscle below the lungs that contracts and relaxes during breathing is A) Lungs. B) Larynx. C) Diaphragm. D) None of above. Show Answer Correct Answer: C) Diaphragm. 23. Which part of the respiratory system is commonly called the "throat" ? A) Pharynx. B) Diaphragm. C) Trachea. D) Larynx. Show Answer Correct Answer: A) Pharynx. 24. Lymph nodes swell when the lymphatic system is doing which important job? A) Transporting oxygen. B) Producing hormones. C) Fighting infection. D) Making red blood cells. Show Answer Correct Answer: C) Fighting infection. 25. Your heart is located ..... A) In the middle of your head. B) Left of the center of your chest. C) On the side of your hip. D) None of above. Show Answer Correct Answer: B) Left of the center of your chest. 26. When the heart contracts after the blood is in the left atrium, blood moves into the ..... A) Left ventricle. B) Heart. C) Lungs. D) Right ventricle. Show Answer Correct Answer: A) Left ventricle. 27. What does the chart show in terms of blood circulation when an athlete starts to run? A) No change in circulation. B) Increase in circulation to each organ. C) Increase in circulation to the lungs. D) Decrease in circulation. Show Answer Correct Answer: B) Increase in circulation to each organ. 28. What are the upper chambers of the heart? A) Bicuspid and mitral. B) Bicuspid and tricuspid. C) Left ventricle and right ventricle. D) Left atrium and right atrium. Show Answer Correct Answer: D) Left atrium and right atrium. 29. What is the mechanical advantage formula? A) Whats mechanical advantage?. B) Output force divided by input force. C) Distance x load. D) Mass / direction. Show Answer Correct Answer: B) Output force divided by input force. 30. Where does the blood go to receive oxygen? A) Brain. B) Esophagus. C) Lungs. D) Ears. Show Answer Correct Answer: C) Lungs. 31. What is the job of the circulatory system? A) Transporting oxygen and nutrients through the body. B) Taking oxygen into the body and removing carbon dioxide. C) Breaking down food and taking nutrients into the body. D) Sensing the surrounding environment. Show Answer Correct Answer: A) Transporting oxygen and nutrients through the body. 32. Name the type of blood vessel that transports blood to the heart. A) Capillary. B) Artery. C) Aorta. D) Vein. Show Answer Correct Answer: D) Vein. 33. How many chambers does blood travel through before it goes to the lungs? A) 2. B) 6. C) 8. D) 4. Show Answer Correct Answer: A) 2. 34. Red blood cells contain ..... which is a substance rich in iron and gives the blood-red color. A) Oxygen. B) Nutrients. C) Hemoglobin. D) Carbon dioxide. Show Answer Correct Answer: C) Hemoglobin. 35. Which of the following is NOT a major branch of the aorta? A) Left common carotid. B) Left subclavian. C) Right subclavian. D) Brachiocephalic. Show Answer Correct Answer: C) Right subclavian. 36. The body would have trouble fighting germs if white blood cells were absent A) True. B) False. Show Answer Correct Answer: A) True. 37. Which of these is a function of the circulatory system? A) Carrying Carbon dioxide from the cells to the lungs. B) Sending nerve impulses throughout the body. C) Transforming large insoluble molecules into small soluble molecules. D) None of above. Show Answer Correct Answer: A) Carrying Carbon dioxide from the cells to the lungs. 38. Your body makes new blood cells and platelets ..... A) Once every week or two. B) Yearly. C) Every few months. D) Every day. Show Answer Correct Answer: D) Every day. 39. ..... connects the mouth and throat to lungs. A) Trachea. B) Diaphragm. C) Nose. D) Alveoli. Show Answer Correct Answer: A) Trachea. 40. What substance is found in human red blood cells? A) Hemoglobin. B) Hemocyanin. C) Oxytocin. D) None of above. Show Answer Correct Answer: A) Hemoglobin. 41. What is another name for platelet? A) Erythrocytes. B) Thrombocytes. C) Leukocytes. D) None of above. Show Answer Correct Answer: B) Thrombocytes. 42. What is sign for brain to send impulse for breathing? A) High O2 level. B) High blood concentration. C) Low CO2 level. D) High CO2 level. Show Answer Correct Answer: D) High CO2 level. 43. The ..... ventricle has a greater workload than the ..... ventricle. A) Right, left. B) Left, right. Show Answer Correct Answer: B) Left, right. 44. The heart is about the size of the three adults hands held together. A) My heart is broken. B) False. C) I am a robot. D) True. Show Answer Correct Answer: B) False. 45. Which organelle controls what goes in and out of the cell? A) Nuclear membrane. B) Nucleus. C) Nucleolus. D) Cell membrane. Show Answer Correct Answer: D) Cell membrane. 46. Blood flows from the the left ventricle to the aorta through this valve A) Mitral valve. B) Pulmonary valve. C) Aortic valve. D) Bicuspid valve. Show Answer Correct Answer: C) Aortic valve. 47. The main blood groups are ..... A) 4. B) 5. C) 2. D) 3. Show Answer Correct Answer: A) 4. 48. What vocabulary word means a blood vessel that carries blood away from the heart? A) Artery. B) Valve. C) Capillary. D) Vein. Show Answer Correct Answer: A) Artery. 49. State TRUE or FALSE !The auricles contract first, forcing the blood into the ventricles. A) False. B) True. C) Maybe . D) None of above. Show Answer Correct Answer: B) True. 50. Pregnant women with Rh-who carry fetuses with Rh +..... A) May increase the risk of miscarriage. B) Can be ignored. Show Answer Correct Answer: A) May increase the risk of miscarriage. 51. What is likely to occur if there is a blockage of a coronary artery A) Stroke. B) Drop in blood pressure. C) Heart attack. D) Diabetes. Show Answer Correct Answer: C) Heart attack. 52. The combining form for the heart is: A) Lymph/o. B) Arteri/o. C) Welcome. D) Card. Show Answer Correct Answer: D) Card. 53. Which blood vessel pumps out oxygenated blood to the body? A) Vena Cava. B) Pulmonary Vein. C) Aorta. D) None of above. Show Answer Correct Answer: C) Aorta. 54. Is the blood in this structure oxygenated or deoxygenated? Pulmonary artery A) Deoxygenated. B) Oxygenated. Show Answer Correct Answer: A) Deoxygenated. 55. Statement:There are muscles in the heart A) Correct. B) Incorrect. C) Partially correct. D) I'm not sure. Show Answer Correct Answer: A) Correct. 56. From the lungs, blood moves back towards the heart into the left atrium, to the ....., and then to the aorta. A) Left Ventricle. B) Right Ventricle. C) Right Atrium. D) Pulmonary Valve. Show Answer Correct Answer: A) Left Ventricle. 57. Which correctly describes the order of thickness of the chamber walls, from thinnest to thickest A) Left Ventricle, Right Ventricle, Atrium. B) Right Ventricle, Left Ventricle, Atrium. C) Atrium, Left Ventricle, Right Ventricle. D) Atrium, Right Ventricle, Left Ventricle. Show Answer Correct Answer: D) Atrium, Right Ventricle, Left Ventricle. 58. What kind of cells surround germs and swallow them? A) Protein. B) Red blood cells. C) White blood cells. D) Antibodies. Show Answer Correct Answer: C) White blood cells. 59. Which combining forms mean "vein" ? A) Phleb/o, my/o. B) Ven/o, vascul/o. C) Angi/o, phleb/o. D) Come on, phlebo. Show Answer Correct Answer: D) Come on, phlebo. 60. Which of the following is not among the functions of the skeletal system? A) Supports the body. B) Carries oxygen. C) Facilitates the movement. D) Protects internal organs. Show Answer Correct Answer: B) Carries oxygen. ← 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