This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 327 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 327 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carries water and minerals from roots to other parts of the plant A) Xylem. B) Phloem. C) Stoma. D) Guard cell. Show Answer Correct Answer: A) Xylem. 2. The inner most layer of the heart A) Endocardium. B) Myocardium. C) Pericardium. D) Left ventricle. Show Answer Correct Answer: A) Endocardium. 3. What component of blood is involved in fighting infection? A) Red blood cell. B) White blood cell. C) Plasma. D) Platelet. Show Answer Correct Answer: B) White blood cell. 4. What are the things you can do to keep your circulatory system healthy? A) 1. Eat only solid foods 2. Only sit around 3. Eat fast foods (KFC, McDonald's, Burger King, etc.). B) 1. Eat pure junk food 2. Do not exercise. C) Avoid overeating sugar 2. Avoid eating junk food 3. Put a pillow under your feet when you sleep to improve blood circulation. D) None of above. Show Answer Correct Answer: C) Avoid overeating sugar 2. Avoid eating junk food 3. Put a pillow under your feet when you sleep to improve blood circulation. 5. What are the small air sacs in the lungs where many capillaries exchange carbon dioxide for oxygen taken into the body. A) Alveoli. B) Bronchi. C) Bronchiole. D) Nasal Cavity. Show Answer Correct Answer: A) Alveoli. 6. Flaplike structures are located between the atria and ventricles and in places where large vessels are attached to the heart. A) Valves. B) Ventricle. C) Atrium. D) None of above. Show Answer Correct Answer: A) Valves. 7. Which type of blood cell picks up oxygen and carbon dioxide? A) White blood cells. B) Red blood cells. Show Answer Correct Answer: B) Red blood cells. 8. Which of the following organisms has the largest total surface area to volume ratio? Which of the following organisms has the largest ratio of total surface area per volume? A) Amoeba sp.Amoeba sp. B) CockroachLipas. C) RatTikus. D) ElephantGajah. Show Answer Correct Answer: A) Amoeba sp.Amoeba sp. 9. The circulatory system carries around A) Oxygen, and carries away carbon dioxide. B) Only oxygen. C) Oxygen, nutrients and water and carrying away carbon dioxide. D) Carbon dioxide and carries away oxygen. Show Answer Correct Answer: C) Oxygen, nutrients and water and carrying away carbon dioxide. 10. Oxygenated blood enters the heart here. A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: B) Left atrium. 11. These vessels carry blood to each lung from the right ventricle. A) Superior vena cava. B) Pulmonary arteries. C) Pulmonary veins. D) Aorta. Show Answer Correct Answer: B) Pulmonary arteries. 12. The life span of a platelet is ..... days A) 5 to 9. B) 1 to 7. C) 4 to 10. D) 12 to 15. Show Answer Correct Answer: A) 5 to 9. 13. We breathe out ..... when we exhale. A) Carbon monoxide. B) Carbon dioxide. C) Helium. D) Oxygen. Show Answer Correct Answer: B) Carbon dioxide. 14. What are the two upper chambers of the heart called? A) Aorta. B) Ventricles. C) Veins. D) Atria. Show Answer Correct Answer: D) Atria. 15. Which system is responsible for carrying oxygen to the body's muscles? A) Outgrowths. B) Respiratory. C) Muscular. D) Circulatory. Show Answer Correct Answer: D) Circulatory. 16. The oxygen-rich blood supply to the lungs is provided by the ..... A) Pulmonary artery. B) Aorta. C) Coronary artery. D) Vena cava. Show Answer Correct Answer: A) Pulmonary artery. 17. The sound of the heart beating is actually the A) Valves closing. B) Veins closing. C) Muscle contraction. D) Blood moving. Show Answer Correct Answer: A) Valves closing. 18. These carry oxygenated blood from the heart to the rest of the body. A) Veins. B) Arteries. C) Lungs. D) None of above. Show Answer Correct Answer: B) Arteries. 19. The main function of respiratory system is A) To provide oxygen and remove carbon dioxide from our body. B) To provide carbon dioxide and remove oxygen from our body. C) To bring oxygen to every part of our body. D) To bring carbon dioxide to every part of our body. Show Answer Correct Answer: A) To provide oxygen and remove carbon dioxide from our body. 20. All of the below are factors that increase or decrease the blood pressure except for: A) Medication. B) Exercise. C) Heart disease. D) Toothache. Show Answer Correct Answer: D) Toothache. ← 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