This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 23 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carry blood away from heart; mostly oxygen-rich and have thickest walls A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 2. Where does your heart get oxygen? A) Lungs. B) Mouth. C) Toes. D) Fingernails. Show Answer Correct Answer: A) Lungs. 3. What is the main function of the valves in veins? A) To control blood flow by vasoconstriction/vasodilation. B) To carry deoxygenated blood. C) To prevent backflow of low pressure blood. D) To carry oxygenated blood. Show Answer Correct Answer: C) To prevent backflow of low pressure blood. 4. What type of blood vessel is so thin that white blood cells can squeeze out of through the blood vessel walls? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 5. The scientific name of red blood cells are A) Leucocytes. B) Thrombocytes. C) Erythrocytes. D) None of above. Show Answer Correct Answer: C) Erythrocytes. 6. True or False:The circulatory system sends messages to all parts of the body? A) True. B) False. Show Answer Correct Answer: B) False. 7. The artery wall have ..... layers. A) Two. B) Three. C) Four. D) Five. Show Answer Correct Answer: B) Three. 8. Capillaries ..... veins and arteries A) Connect. B) Detach. Show Answer Correct Answer: A) Connect. 9. What disorder is resulted from the blockage brought by the hardening of the arteries in the brain or in neck vessels leading to the brain? A) Atherosclerosis. B) Stroke. C) Coronary heart disease. D) Hemophilia. Show Answer Correct Answer: B) Stroke. 10. These two chambers, in the lower part of the heart of the heart, called ....., pump blood to the lungs or around the body. A) Choir. B) Atrium. C) Pot. D) Ventricles. Show Answer Correct Answer: D) Ventricles. 11. What is the main function of white blood cells in the body? A) Targeting pathogens and fighting off infections. B) Transporting carbon dioxide to the lungs to be excreted. C) Binding to oxygen to transport it to respiring cells. D) Helping the blood clot. Show Answer Correct Answer: A) Targeting pathogens and fighting off infections. 12. Thrombus breaks off of the wall of the vessel and begins floating through the bloodstream ..... A) Scab. B) Fibrin. C) Embolus. D) Aspus. Show Answer Correct Answer: C) Embolus. 13. Your heart ..... pumps blood through your lungs and to other parts of your body. A) Single. B) Double. C) Triple. D) None of above. Show Answer Correct Answer: B) Double. 14. What is the aorta? A) A vein that takes blood from the heart to the lungs. B) The main vein that returns deoxygenated blood to the heart. C) The main artery taking blood from your heart to the rest of the body. D) None of above. Show Answer Correct Answer: C) The main artery taking blood from your heart to the rest of the body. 15. These are small veins. A) Valves. B) Ventricles. C) Capillaries. D) Venules. Show Answer Correct Answer: D) Venules. 16. An inflammation of a vein with the formation of a clot is ..... A) Phlebitis. B) Thrombophlebitis. C) Embolus. D) Varicose vein. Show Answer Correct Answer: B) Thrombophlebitis. 17. Find the false statement(s)i) During each cardiac cycle two prominent sounds are produced ii) The first heart sound (lub) is associated with the closure of the semilunar valvesiii) The second heart sound (dub) is associated with the closure of the bicuspid and tricuspid valvesiv) Heart sounds can be easily heard through a stethoscope A) I) and ii). B) Ii) and iii). C) Iii) and iv). D) I) and iv). Show Answer Correct Answer: B) Ii) and iii). 18. Human Circulatory system includes with..... A) Heart హృదయం. B) Blood. C) Blood vessels. D) All the above పైవన్నీ. Show Answer Correct Answer: D) All the above పైవన్నీ. 19. A component of blood that carries glucose and other substances to the body's cells A) Plasma. B) RBC. C) WBC. D) Platelet. Show Answer Correct Answer: A) Plasma. 20. How does the heart pump blood throughout the body? A) By contracting and relaxing to create pressure. B) By expanding and contracting like a balloon. C) By releasing hormones into the bloodstream. D) By sending electrical signals. Show Answer Correct Answer: A) By contracting and relaxing to create pressure. ← 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