This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 425 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 425 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. All of the following describe platelets EXCEPT A) Have no color. B) Are flat and round. C) Are long thin fibers. D) Shaped like little plates. Show Answer Correct Answer: C) Are long thin fibers. 2. What are the functions of Pancreas? A) Helps in digestion and regulating blood pressure. B) Helps in digestion and regulating blood sugar. C) Helps in blood sugar regulation and produces insulin. D) Helps in blood sugar regulation and produces glucagon. Show Answer Correct Answer: B) Helps in digestion and regulating blood sugar. 3. Risk factors of Hypertension include: A) Family history. B) Being overweight and lack of physical activity. C) Consuming too much salt. D) High stress levels. E) All of the above. Show Answer Correct Answer: E) All of the above. 4. ..... fights infection A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: B) White blood cells. 5. They are produced in the bone marrow. Gas exchanged is the main function of these cells. A) White blood cells. B) Red blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: B) Red blood cells. 6. The heart of a human contains ..... chamber(s). A) One. B) Two. C) Three. D) Four. Show Answer Correct Answer: D) Four. 7. What do valves do in the veins? A) Pump blood through the veins. B) Nothing. C) Stop blood flowing backward. D) Block the blood. Show Answer Correct Answer: C) Stop blood flowing backward. 8. Which of the following can be used to correct arrhythmia in the heart or cardiac arrest. A) Sphygmomanometer. B) Stethoscope. C) CPR. D) Defibrillator. Show Answer Correct Answer: D) Defibrillator. 9. Which of the following is NOT a characteristic of roots for absorbing water? A) Huge surface area. B) Presence of solution at higher concentration than soil water. C) Presence of pores for inflow of water. D) None of above. Show Answer Correct Answer: C) Presence of pores for inflow of water. 10. The circulatory system carries the needed materials oxygen and ..... to the body cells. A) Carbon Dioxide. B) Nutrients. C) Fibrin. D) Platelets. Show Answer Correct Answer: B) Nutrients. 11. Which type of blood vessels possess valves? A) Capillaries. B) Veins. C) Arteries. D) None of above. Show Answer Correct Answer: B) Veins. 12. These are tiny sacs in the lungs that are surrounded by capillaries. This is also where the gas exchange takes place (oxygen enters the bloodstream and carbon dioxide exits). A) Alveoli. B) Bronchioles. C) Respiratory. D) None of above. Show Answer Correct Answer: A) Alveoli. 13. What type of blood does the fish pump in its CS? A) Oxygenated blood. B) Deoxygenated blood. Show Answer Correct Answer: A) Oxygenated blood. 14. Blood circulation to the body (except lungs) and back A) Arteries. B) Vascular. C) Pulmonary. D) Systemic. Show Answer Correct Answer: D) Systemic. 15. Which of the following best describes an antigen? A) A protein on the surface of a red blood cell. B) A type of red blood cell. C) A protein that binds to foreign molecules, signaling the immune system to attack. D) None of above. Show Answer Correct Answer: A) A protein on the surface of a red blood cell. 16. How many layers of cells make up the wall of a capillary? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 17. What happens when we inhale (breathe in)? A) The external intercostal muscles contract and the ribcage is pulled upwards and inwards. B) The external intercostal muscles contract and the ribcage is pulled upwards and outwards. C) The internal intercostal muscles contract and the ribcage is pulled upwards and outwards. D) None of above. Show Answer Correct Answer: B) The external intercostal muscles contract and the ribcage is pulled upwards and outwards. 18. During a biology class, Benjamin, Ethan, and Michael were discussing the human body. They were curious about where the circulatory system gets oxygen from. Can you help them? A) Respiratory system. B) Digestive system. C) Nervous system. D) Endocrine system. Show Answer Correct Answer: A) Respiratory system. 19. Arteries carry oxygenated blood where? A) Away from the heart. B) Toward the heart. C) Into the heart. D) Near the heart. Show Answer Correct Answer: A) Away from the heart. 20. What is the correct order of blood flow through your heart and body? A) Right Atrium, Left Atrium, Body, Right Ventricle, Left Ventricle, Lungs. B) Left Ventricle, Left Atrium, Lungs, Right Ventricle, Right Atrium, Body. C) Right Atrium, Right Ventricle, Lungs, Left Atrium, Left Ventricle, Body. D) Right Ventricle, Right Atrium, Lungs, Left Ventricle, Left Atrium, Body. Show Answer Correct Answer: C) Right Atrium, Right Ventricle, Lungs, Left Atrium, Left Ventricle, Body. ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 4Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books