This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System โ Quiz 143 ๐ Homepage ๐ Download PDF Books ๐ Premium PDF Books Circulatory System Quiz 143 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the main organ of our circulatory system? A) Heart. B) Lungs. C) Skin. D) Liver. Show Answer Correct Answer: A) Heart. 2. The fluid between cells is returned to the circulatory system by the A) Lymphatic system. B) Respiratory system. C) Renal system. D) Skeletal system. Show Answer Correct Answer: A) Lymphatic system. 3. ..... blood flows in pulmonary artery rather than other arteries. A) Oxygenated with oxygen. B) Deoxygenated is deoxygenated. C) Mixed. D) All the above เฐชเฑเฐตเฐจเฑเฐจเฑ. Show Answer Correct Answer: B) Deoxygenated is deoxygenated. 4. Which blood type contains only Anti-A antibodies? A) AB. B) A. C) B. D) O. Show Answer Correct Answer: C) B. 5. Which blood vessel carries blood full of oxygen away from the heart? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: A) Artery. 6. The blood drops off ..... in the lungs. A) Oxygen. B) Carbon dioxide. C) Blood. D) Nutrients. Show Answer Correct Answer: B) Carbon dioxide. 7. Blood from lungs will enter the left ventricle first before delivered to all part of our body. A) True. B) False. Show Answer Correct Answer: A) True. 8. What is the primary organ of the circulatory system? A) Lungs. B) Ventricles. C) Arteries. D) Heart. Show Answer Correct Answer: D) Heart. 9. Which of the following is not a blood vessel? A) Arteries. B) Lymph vessels. C) Veins. D) Capillaries. Show Answer Correct Answer: B) Lymph vessels. 10. The heart is protected by the ..... A) Skull. B) Ribcage. C) Lungs. D) None of above. Show Answer Correct Answer: B) Ribcage. 11. Which animal is not cold blooded? A) Amphibian. B) Fish. C) Mammal. D) None of above. Show Answer Correct Answer: C) Mammal. 12. The amount of blood pumped from the heart in one beat is A) Stroke volume. B) Cardiac output. C) Resting heart rate. D) Maximum heart rate. Show Answer Correct Answer: A) Stroke volume. 13. Which chamber receives oxygenated blood from the lungs? A) Right atrium. B) Left ventricle. C) Right ventricle. D) Left atrium. Show Answer Correct Answer: D) Left atrium. 14. The ..... is the portion of the circulatory system that carries deoxygenated blood from the heart to the lungs and returns oxygenated blood back to the heart. A) Pulmonary Circuit. B) Systemic Circuit. Show Answer Correct Answer: A) Pulmonary Circuit. 15. What is the main structure of the circulatory system? A) Lungs. B) Heart. C) Brain. D) Stomach. Show Answer Correct Answer: B) Heart. 16. Which of the following is true regarding regular cardiorespiratory exercise? A) It reduces the risk of heart disease. B) It increases risk of diabetes due to having to eat more calories. C) It always reduces bone mass due to the constant stress of running on concrete. D) It accelerates aging of the heart due to being over-worked. Show Answer Correct Answer: A) It reduces the risk of heart disease. 17. Our circulatory system is like a huge system of freeways and roads that help transport materials! All the explanations below are for what our circulatory system does to keep us growing and thriving EXCEPT ..... A) To transport carbon dioxide and waste out of cells. B) To make blood cells and special proteins for transport. C) To transport nutrients from the digestive system to tissues and cells. D) To transport oxygen to tissues and cells. Show Answer Correct Answer: B) To make blood cells and special proteins for transport. 18. Which system absorbs oxygen and releases carbon dioxide? A) Respiratory. B) Excretory. C) Endocrine. D) Immune. Show Answer Correct Answer: A) Respiratory. 19. The types of White Blood Cells that has function to produces antibody to fight the infections is ..... A) Eosinophil. B) Basophil. C) Monocyte. D) Lymphocyte. Show Answer Correct Answer: D) Lymphocyte. 20. How many loops does the human circulatory system contain? A) One. B) Two. C) Three. D) Four. Show Answer Correct Answer: B) Two. 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