This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 264 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 264 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Number of heart valves A) 4. B) 3. C) 2. D) 5. Show Answer Correct Answer: A) 4. 2. The blood in the pulmonary artery branches is ..... but relatively ..... A) Low in oxygen; high in carbon dioxide. B) High in carbon dioxide; low in oxygen. C) Both high levels in oxygen and carbon dioxide. D) Both levels in oxygen and carbon dioxide. Show Answer Correct Answer: A) Low in oxygen; high in carbon dioxide. 3. Mitral valve =..... A) Tricuspid valve. B) Bicuspid valve. C) Pulmonary valve. D) Aortic valve. Show Answer Correct Answer: B) Bicuspid valve. 4. We have..... Lungs A) To many. B) 2. C) 3. D) 1. Show Answer Correct Answer: B) 2. 5. This particular blood vessel carries oxygenated blood to the heart coming from the lungs. A) Super vena cava. B) Inferior vena cava. C) Pulmonary artery. D) Pulmonary vein. Show Answer Correct Answer: D) Pulmonary vein. 6. Which chambers of the heart do RBC always enter first? A) L/R Atrium. B) L/R Aorta. C) L/R Artery. D) L/R Vein. Show Answer Correct Answer: A) L/R Atrium. 7. When you feel your pulse beating against your skin, what are your really feeling? A) Your heart beating against your skin as it pumps blood throughout your body. B) Your arteries thumping against your skin as they pump blood throughout your body. C) Your veins thumping against your skin as they pump blood throughout your body. D) Your stomach growling very loudly because you are starving and pumping blood throughout your body. Show Answer Correct Answer: B) Your arteries thumping against your skin as they pump blood throughout your body. 8. Which statement about the human sex chromosomes is correct? A) A All boys have two Y chromosomes. B) B Everybody has at least one X chromosome. C) C Girls have a Y chromosome and an X chromosome. D) D Nobody has two X chromosomes. Show Answer Correct Answer: B) B Everybody has at least one X chromosome. 9. Pulse is the alternate expansion and recoil of the wall of the artery during A) Ventricular systole. B) Ventricular diastole. C) Auricular diastole. D) Auricular systole. Show Answer Correct Answer: A) Ventricular systole. 10. What is a group of heart cells that send out signals that make the heart muscle contract? A) Artery. B) Capillary. C) Pacemaker. D) Valve. Show Answer Correct Answer: C) Pacemaker. 11. What pushes food from the mouth to the stomach? A) Stomach. B) Gall bladder. C) Esophagus. D) None of above. Show Answer Correct Answer: C) Esophagus. 12. What are arterioles? A) Lungs. B) Blood. C) Thinner arteries. D) Smooth muscle. Show Answer Correct Answer: C) Thinner arteries. 13. Where does haemoglobin become oxyhaemoglobin? A) Heart. B) Kidneys. C) Liver. D) Lungs. Show Answer Correct Answer: D) Lungs. 14. What body system brings in needed oxygen into the body and releases carbon dioxide as waste. A) Circulatory. B) Respiratory. C) Outgrowths. D) Muscular. Show Answer Correct Answer: B) Respiratory. 15. ..... are the lower chambers of the heart. A) Platelets. B) Atriums. C) Plasma. D) Ventricles. Show Answer Correct Answer: D) Ventricles. 16. Carry blood from the heart to the tissue A) Arteries. B) Veins. C) Blood capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 17. During an inhale, when the lungs inflate, how do the diaphragm and ribs move? A) The diaphragm moves down and the ribs move up and out. B) The diaphragm moves up and the ribs move up and out. C) The diaphragm moves up and the ribs move down and in. D) None of above. Show Answer Correct Answer: A) The diaphragm moves down and the ribs move up and out. 18. The sac that surrounds and protects the heart? A) Endocardium. B) Epicardium. C) Myocardium. D) Pericardium. Show Answer Correct Answer: D) Pericardium. 19. A woman has type B blood and her husband has type O blood. What must be the woman's genotype, if they have a child with type O blood? A) BO. B) BB. C) OO. D) Type B. Show Answer Correct Answer: A) BO. 20. The human heart has how many chambers? A) 2. B) 4. C) 6. D) None. Show Answer Correct Answer: B) 4. ← 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