This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System โ Quiz 333 ๐ Homepage ๐ Download PDF Books ๐ Premium PDF Books Circulatory System Quiz 333 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the heart beats the muscle contracts. A) True. B) False. Show Answer Correct Answer: A) True. 2. At the end of an artery, they split into ..... A) Capillaries. B) Arterioles. C) Venules. D) None of above. Show Answer Correct Answer: B) Arterioles. 3. Identify the organ A) Kidney. B) Heart. C) X. D) None. Show Answer Correct Answer: B) Heart. 4. Component of blood that fights foreign bodies A) Plasma. B) White blood cells. C) Red blood cells. D) Platelets. Show Answer Correct Answer: B) White blood cells. 5. ..... is the fluid in which different types of cells are suspended A) Haemoglobin. B) Plasma. C) White Blood Cells. D) Platelets. Show Answer Correct Answer: B) Plasma. 6. The circulation where the flow of blood goes through heart to lungs and back to heart is the A) Coronary circulation. B) Systemic circulation. C) Pulmonary circulation. D) Capillaries. Show Answer Correct Answer: C) Pulmonary circulation. 7. Why does the heart beating producing "lub dub" sound? A) Because the muscles of the heart are contracting. B) Because the heart valves are opening and closing. C) Because the blood are moving in and out of the heart. D) Because the blood are moving in and out of the lungs. Show Answer Correct Answer: B) Because the heart valves are opening and closing. 8. Piercing and sucking type of mouthparts of aphids..... A) Haustoria Haustoria. B) Proboscis proboscis. C) Straw. D) All the above เฐชเฑเฐตเฐจเฑเฐจเฑ. Show Answer Correct Answer: B) Proboscis proboscis. 9. All the other neurons that aren't part of the central nervous system are part of the ..... nervous system A) Peripheral. B) Outer. C) Inside. D) Pulmonary. Show Answer Correct Answer: A) Peripheral. 10. Is this statement true or false:There are two loopsin the circulatory system; the first goes to and from the heart visiting thelungs to collect oxygen and get rid of carbon dioxide.The other loop is much larger and goes to and from the heart buttravels all around the body in between. A) TRUE. B) FALSE. Show Answer Correct Answer: A) TRUE. 11. An average resting heart rate ranges from: A) 40-50 BPM. B) 70-80 BPM. C) 60-100 BPM. D) 80-90 BPM. Show Answer Correct Answer: C) 60-100 BPM. 12. Which is the blood cell that protects against infections? A) White blood cells. B) Red blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: A) White blood cells. 13. Inferior is which end of the heart? A) Base. B) Apex. Show Answer Correct Answer: B) Apex. 14. The right side of your heart pumps blood through your ..... A) Lungs. B) Every other part of your lungs. C) Heart. D) Small intestine. Show Answer Correct Answer: A) Lungs. 15. How much erythrocytes contains in one drop of blood? A) 4.5-5.5 million. B) 4.5-5.5 trillion. C) 4.5-5.5 thousands. D) 4.5-5.5 hundreds. Show Answer Correct Answer: A) 4.5-5.5 million. 16. Heart, blood vessels and blood help us to ..... A) Breathe. B) Digest our food. C) Help to move substances around our body. D) None of above. Show Answer Correct Answer: C) Help to move substances around our body. 17. Which part of the blood helps fight disease? A) Plasma. B) Platelets. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: D) White blood cells. 18. The valve between the left ventricle and aorta is the? A) Interventricular septum. B) Aortic semilunar valve. C) Mitral valve. D) Bicuspid valve. Show Answer Correct Answer: B) Aortic semilunar valve. 19. William Harvey performed the greatest-ever ..... experiments, giving birth to the science of ..... A) Medical, Physiology. B) Art, painting. C) Scientific, biology. D) Scientific, physiology . Show Answer Correct Answer: A) Medical, Physiology. 20. How does the circulatory system contribute to homeostasis? A) By producing hormones to regulate metabolism. B) By absorbing nutrients from food. C) By helping control body temperature. D) By converting glucose into energy. Show Answer Correct Answer: C) By helping control body temperature. โ PreviousNext โRelated 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 ๐ Back to Homepage ๐ Download PDF Books ๐ Premium PDF Books