This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 315 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 315 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. True or False:Your heart is an organ and a muscle A) True. B) False. Show Answer Correct Answer: A) True. 2. What dose deoxygenated mean A) Oxygen rich blood. B) Oxygen poor blood. Show Answer Correct Answer: B) Oxygen poor blood. 3. A narrow blood vessel that connects arteries and veins, and where material can move in and out of bloodstream. A) Artery. B) Vein. C) Capillary. D) Alveoli. Show Answer Correct Answer: C) Capillary. 4. What disease causes white blood cells to produce in great numbers? A) Leukemia. B) Anemia. C) Agglutination. D) Respiration. Show Answer Correct Answer: A) Leukemia. 5. Which statements are true about human heart?a. The two upper chambers are called ventriclesb. The heart is divided into four chambersc. The right side of the heart contains deoxygenated blood. A) A. and b. only. B) A. and c. only. C) B. and c. only. D) A, b and c. Show Answer Correct Answer: C) B. and c. only. 6. Blood vessels that carry blood back to the heart are called? A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 7. ..... is a group of cells that fire electric impulses to initiate the heart contraction and control the pace of the heart. A) Atrioventricular node. B) Sinovenal node. C) Sinoatrial node. D) Sinoventricular node. Show Answer Correct Answer: C) Sinoatrial node. 8. ..... play an important role in fighting infection and destroy germs. A) Plasma. B) White blood cells. C) Red blood cells. D) Blood. Show Answer Correct Answer: B) White blood cells. 9. Ramifications, smaller than veins and arteries, which surround and connect organs A) Heart. B) Arteries. C) Veins. D) Capillaries. E) Circulatory system and its parts. Show Answer Correct Answer: D) Capillaries. 10. The thymus produces cells to fight infection. A) True. B) False. Show Answer Correct Answer: A) True. 11. True or false? Blood in human veins is blue. A) True. B) False. C) It depends on how much the human breathes. D) They are generally green. Show Answer Correct Answer: B) False. 12. Deoxygenated blood means that the blood is low in ..... A) Oxygen. B) Carbon dioxide. C) Nutrients. D) Water. Show Answer Correct Answer: A) Oxygen. 13. The pathways of blood A) Venules. B) Veins. C) Cartilage. D) All of the above. Show Answer Correct Answer: B) Veins. 14. Normal leukocytes are in the range..... A) 6, 000/ml-12, 000/ml. B) 7, 000/ml-12, 000/ml. Show Answer Correct Answer: A) 6, 000/ml-12, 000/ml. 15. What is the primary function of blood as described in the image? A) To provide structural support to the body. B) To transport nutrients and waste around the body. C) To initiate the clotting process. D) To fight against infections. Show Answer Correct Answer: B) To transport nutrients and waste around the body. 16. What do your valves do? A) They keep blood flowing in one direction. B) They open and shut when your heart pumps. C) They make the sound of your pulse. D) None of above. Show Answer Correct Answer: A) They keep blood flowing in one direction. 17. What is the function of an erythrocyte? A) Fight infection. B) Blood clotting. C) Carry oxygen. D) Clog arteries. Show Answer Correct Answer: C) Carry oxygen. 18. Thickest layer is Tunica Media due to the many layers of elastic lamellae; Thin IEL & EEL; vasa vasorum in adventitia A) Arterioles. B) Muscular arteries. C) Elastic arteries. D) None of above. Show Answer Correct Answer: C) Elastic arteries. 19. The organ wich can oxygenate the blood and remove the waste gases out of your ..... A) Body. B) Heart. C) Spleen. D) Kidneys. E) Lungs. Show Answer Correct Answer: E) Lungs. 20. This disorder is when the red blood cells are shaped like crescents instead of round disks. A) Sickle Cell Anemia. B) Leukemia. C) Anemia. D) Hypertension. Show Answer Correct Answer: A) Sickle Cell Anemia. ← 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