This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Biology > Circulatory System – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 39 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Cell fragments that clot blood are called ..... A) Platelets. B) Plasma. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: A) Platelets. 2. What do we call the molecules on the surface of blood cells that cause blood types? A) Triangles. B) Antibodies. C) Blood markers. D) Antigens. Show Answer Correct Answer: D) Antigens. 3. These tubes that carry the blood are called ..... A) Trachea. B) Blood vessels. C) Lungs. D) Heart. Show Answer Correct Answer: B) Blood vessels. 4. What enzyme breaks down Carbohydrates A) Lipase. B) Protease. C) Amylase. D) Carbohydrase. Show Answer Correct Answer: D) Carbohydrase. 5. What is the specific transportation system in complex organism? A) Transport system. B) Transpiration system. C) Blood circulatory system. D) Respiration system. Show Answer Correct Answer: C) Blood circulatory system. 6. What is the main function of the Respiratory System? A) Blood transports nutrients and gases through the body. B) Exchanges gases between the body and the environment. C) Breaks down food to provide energy. D) Removes solid, liquid and gas waste from the body. Show Answer Correct Answer: B) Exchanges gases between the body and the environment. 7. The main function of leukocytes is to: A) Carry oxygen. B) Fight infection. C) Carry carbon dioxide. D) Clot and heal wounds. Show Answer Correct Answer: B) Fight infection. 8. The real work of the heart contraction is done by which layer? A) Pericardium. B) Myocardium. C) Endocardium. D) Epicardium. Show Answer Correct Answer: B) Myocardium. 9. What type of cell fights of pathogens or foreign objects in the body? A) Neurons. B) Red Blood Cell. C) White Blood Cell. D) Thrombocytes. Show Answer Correct Answer: C) White Blood Cell. 10. Fibrin is produced when the blood components called ..... start a chain reaction that produces a blood clot. A) Hemoglobin. B) White Blood Cells. C) Platelets. D) Red Blood Cells. Show Answer Correct Answer: C) Platelets. 11. Which of the following statement is NOT TRUE about cardiorespiratory responses during prolonged exercise? A) Increase cardiac output. B) Maintain cardiac output. C) Reduce stroke volume. D) Increase heart rate. Show Answer Correct Answer: A) Increase cardiac output. 12. What type of blood do the arteries USUALLY carry? A) Deoxygenated Blood. B) Oxygenated Blood. Show Answer Correct Answer: B) Oxygenated Blood. 13. After blood leaves the Right atrium it passes through the ..... A) Right ventricle. B) Tricuspid valve. C) Of valves. D) Aortic valve. Show Answer Correct Answer: B) Tricuspid valve. 14. The ..... is a type of ..... muscle which pumps blood throughout the body. A) Blood vessels, voluntary. B) Blood vessels, involuntary. C) Heart, voluntary. D) Heart, involuntary. Show Answer Correct Answer: D) Heart, involuntary. 15. Made up of the brain and spinal cord A) Central Nervous System (CNS). B) Somatic System. C) Autonomic System. D) Peripheral Nervous System (PNS). Show Answer Correct Answer: A) Central Nervous System (CNS). 16. Normal blood pressure A) $\frac{90}{80}$. B) $\frac{150}{80}$. C) $\frac{120}{80}$. D) $\frac{140}{90}$. Show Answer Correct Answer: C) $\frac{120}{80}$. 17. How many chambers are present in human heart? A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: A) 4. 18. The history of blood typing started when a scientist by the name ..... discovered two kinds of substances (called antigens and antibodies) in human blood A) Karl Landsteiner. B) Karl Marx. C) Alfred Wegener. D) Nikola Tesla. Show Answer Correct Answer: A) Karl Landsteiner. 19. The AV valve on the right side is called the A) Bicuspid valve. B) Tricuspid valve. C) Pulmonary valve. D) Aortic valve. Show Answer Correct Answer: B) Tricuspid valve. 20. What is the function of the vein? A) To carry deoxygenated blood to the heart. B) To carry oxygenated blood away from the heart. C) To carry deoxygenated blood away from the heart. D) To carry oxygenated blood to the heart. Show Answer Correct Answer: A) To carry deoxygenated blood to the heart. 21. What does blood carry throughout the body? A) Carbon dioxide, nutrients, and waste products. B) Oxygen, nutrients, hormones, and waste products. C) Only oxygen and nutrients. D) Only waste products. Show Answer Correct Answer: B) Oxygen, nutrients, hormones, and waste products. 22. Our circulatory system helps us ..... A) Clean our blood. B) Sense the world around us. C) Transport nutrients, oxygen and waste around the body. D) None of above. Show Answer Correct Answer: C) Transport nutrients, oxygen and waste around the body. 23. These blood vessels (pipes) carry blood cells (delivery trucks) AWAY FROM THE HEART. A) Veins. B) Arteries. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Arteries. 24. Blood travels through at high pressure: A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 25. Plasma makes up ..... % of our blood A) 55. B) 52. C) 1. D) 50. Show Answer Correct Answer: A) 55. 26. Blood in mammals is contains red blood cells (erythrocytes) 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: A) Contain haemoglobin that binds and transports oxygen and carbon dioxide. 27. Blood vessels carry the materials throughout the body. A) FALSE. B) TRUE. Show Answer Correct Answer: A) FALSE. 28. The system that makes white blood cells. A) Nervous. B) Respiratory. C) Skeletal. D) Circulatory. Show Answer Correct Answer: C) Skeletal. 29. A form of heart failure A) CPR. B) CAD. C) COPD. D) CHF. Show Answer Correct Answer: D) CHF. 30. Which of the following is NOT the adaptation to high altitude? A) Enlargement of thorax. B) Increasing number of red blood cells. C) Increasing number of haemoglobin. D) Increasing number of platelets. Show Answer Correct Answer: D) Increasing number of platelets. 31. Which body part is roughly the same size as your heart? A) Your fist. B) The bottom of your foot. C) Your knee cap. D) Your brain. Show Answer Correct Answer: A) Your fist. 32. The period of ventricular contraction in the heart is called diastole. A) True. B) False. Show Answer Correct Answer: B) False. 33. Guess what! Even though we see it often in movies, what real color is human blood? A) Bright Red, like a rose. B) Completely Transparent, like water. C) Alien Green, obviously. D) It's always Blue inside, only red outside, right?. Show Answer Correct Answer: A) Bright Red, like a rose. 34. When the heart contracts, the right ventricle will pump the blood into the ....., where the CO2 is replaced with oxygen, A) Lungs. B) Aorta. C) Vein. D) Heart. Show Answer Correct Answer: A) Lungs. 35. The heart is about the size of a/an: A) Apple. B) Pumpkin. C) Egg. D) Peanut. Show Answer Correct Answer: A) Apple. 36. What is the large vein that brings oxygen poor blood back to the heart? A) Aorta. B) Pulmonary Vein. C) Pulmonary Vein. D) Vena Cava. Show Answer Correct Answer: D) Vena Cava. 37. 1) I carry oxygen from the lungs to different parts of the body. A) WBC. B) RBC. C) Platelets. D) None of the above. Show Answer Correct Answer: B) RBC. 38. The digestive system breaks food into simple substances (nutrients) that the body can use. What system carries these nutrients from the digestive system to other parts of the body? A) Nervous. B) Respiratory. C) Circulatory. D) Skeletal. Show Answer Correct Answer: C) Circulatory. 39. Which of these describes the role of the four chambers in the functioning circulatory system A) They maintain a steady supply of oxygenated blood to the body. B) They filter RBC in the liver. C) They maintain the flow of air in and out of the lungs. D) They maintain an appropriate level of hormones in the body. Show Answer Correct Answer: A) They maintain a steady supply of oxygenated blood to the body. 40. Blood carries a chemical from one part of the body to another called as A) Vitamins. B) Enzymes. C) Hormones. D) None of above. Show Answer Correct Answer: C) Hormones. 41. The Circulatory System transports this from the lungs A) Carbon Dioxide. B) Oxygen. C) Aorta. D) Blood. Show Answer Correct Answer: B) Oxygen. 42. Which blood type is the UNIVERSAL DONOR? A) O. B) A. C) AB. D) B. Show Answer Correct Answer: A) O. 43. Which solution will be outside when the cell slightly enlarges or even bursts? A) Hypertonic solution. B) Sugar solution. C) Isotonic solution. D) Hypotonic solution. Show Answer Correct Answer: D) Hypotonic solution. 44. ¿What happens when the heart stops? A) Heart Attack. B) Angina. Show Answer Correct Answer: A) Heart Attack. 45. One of treatment for coronary heart disease is the insertion of tiny baloon into the collapsed artery. Then this baloon is inflated using water to push the artery open. What is this treatment called? A) Angioplasty. B) Prescirbed statins. C) 'By-pass' surgery. D) Inserting a stent. Show Answer Correct Answer: A) Angioplasty. 46. The right side of the heart transports ..... blood. A) Deoxygenated. B) Oxygenated. C) Both deoxygenated and oxygenated. D) None of above. Show Answer Correct Answer: A) Deoxygenated. 47. Fatima has blood pressure 183/81, what is Fatima's systolic pressure? A) 183/81. B) 81. C) 81/183. D) 183. Show Answer Correct Answer: D) 183. 48. ●Blood vessels carry oxygenated blood away from the heart to the cells, tissues and organs A) Veins. B) Capillaries. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. 49. Which is a good way to keep your heart healthy? A) Eating healthy foods. B) Playing video games. C) Eating greasy foods. D) None of above. Show Answer Correct Answer: A) Eating healthy foods. 50. Name the condition where the flow of blood is suddenly blocked. A) Myocardial Infarction. B) Atherosclerosis. C) Arrhythmia. D) Prolapsed valves. Show Answer Correct Answer: A) Myocardial Infarction. 51. The parts of the circulatory system are A) Brain, spinal cord and nerves. B) Lungs, nose and mouth. C) Heart, blood and blood vessels. D) Stomach, small intestine and large instestine. Show Answer Correct Answer: C) Heart, blood and blood vessels. 52. What is the name of the protein found on the red blood cell? A) Collagen. B) Hemoglobin. Show Answer Correct Answer: B) Hemoglobin. 53. Where can you feel your heart beat and count your heart rate? A) Pulse on the Wrist. B) Stethoscope on the Knee. C) Checking the Belly Button. D) Pulse on your Head. Show Answer Correct Answer: A) Pulse on the Wrist. 54. The carotid arteries A) Bring blood away from the head. B) Bring blood to the head. C) Transport oxygen-poor blood. D) Are in the thorax. Show Answer Correct Answer: B) Bring blood to the head. 55. Thin-walled vessels that allow for the exchange of O2, CO2, nutrients and wastes between blood cells or air sacs in the lungs are called A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 56. The circulatory system moves blood around the body through the ..... A) Heart. B) Stomach. C) Lungs. D) Head. Show Answer Correct Answer: A) Heart. 57. What type of blood vessel connects arteries to veins? A) Tendons. B) Capillaries. C) Nerves. D) Ligaments. Show Answer Correct Answer: B) Capillaries. 58. 3 answers are carried by blood, which one is NOT? A) Carbon dioxide. B) Glucose. C) Salt. D) Oxygen. Show Answer Correct Answer: C) Salt. 59. The smallest vessels in the body, where oxygen is exchanged for carbon dioxide, are ..... A) Alveoli. B) Capillaries. C) Arteries. D) Veins. Show Answer Correct Answer: B) Capillaries. 60. What is the function of the heart valves in the circulatory system? A) Pump blood to the lungs. B) Regulate blood flow and prevent backflow. C) Produce red blood cells. D) Filter impurities from the blood. Show Answer Correct Answer: B) Regulate blood flow and prevent backflow. ← 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