This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 140 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 140 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Atrioventricular Node A) Heart wall (3). B) Heart room. C) Heart valves (3). D) Cardiac nerves (3). Show Answer Correct Answer: D) Cardiac nerves (3). 2. Where does blood go after the aorta? A) Right atrium. B) Left atrium. C) Lungs. D) Cells. Show Answer Correct Answer: D) Cells. 3. This circuit transports blood to the lungs ..... A) Pulmonary Circuit. B) Systemic Circuit. C) Cardiac Circuit. D) Respiratory Circuit. Show Answer Correct Answer: A) Pulmonary Circuit. 4. There is a (an) ..... between the two sides of the heart to prevent the mixing of blood in both sides ..... A) Valve. B) Wall. C) Atrium. D) Single. Show Answer Correct Answer: B) Wall. 5. A Red blood cell A) NEED TO STUDY THIS ONE!!!!!!!!!!!. B) Either of the two lower chambers of the heart that pumps blood through Arteries. C) A waste product in the blood that comes from the breakdown of proteins. D) A blood cell that carries oxygen throughout the body. Show Answer Correct Answer: D) A blood cell that carries oxygen throughout the body. 6. What is the main role of the circulatory system? A) Transport. B) Protection. C) Stability. D) None of above. Show Answer Correct Answer: A) Transport. 7. What is Blood? A) Blood is the key organ of the Circulatory System. B) Blood is the yellowish coloured liquid. C) Blood is a fluid connective tissue which contains specialized cells. D) None of them. Show Answer Correct Answer: C) Blood is a fluid connective tissue which contains specialized cells. 8. Which of the following represents hypertension A) 115/75. B) 80/120. C) 75/40. D) 155/100. Show Answer Correct Answer: D) 155/100. 9. What part of the heart divides the ventricles into two sides? A) Ventricular separator. B) Divider. C) Septum. D) None of above. Show Answer Correct Answer: C) Septum. 10. Define Cardiac output A) The volume of blood pumped by the heart per hour. B) The volume of blood pumped by the heart per minute. C) Number of heart beats in 1 minute. D) Number of heart beats in 1 second. Show Answer Correct Answer: B) The volume of blood pumped by the heart per minute. 11. The artery carry oxygenated blood except ..... A) Aorta. B) Carotid artery. C) Coronary artery. D) Pulmonary artery. Show Answer Correct Answer: D) Pulmonary artery. 12. Which one of the following blood components helps it to clot when the skin is cut? A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: D) Platelets. 13. What is a normal pulse range for an adult? A) 50-90 beats per minute. B) 60-100 beats per minute. C) 100-120 beats per minute. D) 30-90 beats per minute. Show Answer Correct Answer: B) 60-100 beats per minute. 14. Which blood part helps clot blood when an organism gets cut? A) RBC. B) WBC. C) Plasma. D) Platelets. Show Answer Correct Answer: D) Platelets. 15. What is necessary for the production of RBC's? A) Iron. B) Vitamin B12. C) Folic acid. D) All of above. Show Answer Correct Answer: D) All of above. 16. The building blocks of lipids are A) Starches. B) Fatty acids and Glycerol. C) Sugars. D) Amino Acids. Show Answer Correct Answer: B) Fatty acids and Glycerol. 17. Fungi and bacteria are both single-celled organisms. What do they most likely have in common? A) Both fungi and bacteria are large organisms. B) Both fungi and bacteria can carry out all life functions in their one cell. C) Both fungi and bacteria need sunlight and nutrients from the soil to be able to grow. D) Both fungi and bacteria are highly specialized to do only one job so they must work with other cells to obtain food. Show Answer Correct Answer: B) Both fungi and bacteria can carry out all life functions in their one cell. 18. Red blood cells have a nucleus. A) True. B) False. Show Answer Correct Answer: B) False. 19. What is the color of oxygen rich blood? A) Blue. B) Bright red. C) Dark red. D) None of above. Show Answer Correct Answer: B) Bright red. 20. Which gas is carried in the blood coming from the body to the heart? A) Oxygen. B) Carbon dioxide. Show Answer Correct Answer: B) Carbon dioxide. ← 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