This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 116 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 116 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. After air moves through the pharynx it continues downward. The ....., or windpipe, directs the air into 2 separate branches or tubes. A) Mucus. B) Trachea. C) Larynx. D) Epiglottis. Show Answer Correct Answer: B) Trachea. 2. Which of the following statements is true? A) Your lungs can store several hours' worth of oxygen. B) Your body can't store oxygen at all. C) Your body stores oxygen in your bloodstream. D) Your body needs carbon dioxide to function properly. Show Answer Correct Answer: B) Your body can't store oxygen at all. 3. ..... is the largest artery in the body. A) Aorta. B) Superior vena cava. C) Inferior vena cava. D) Pulmonary artery. Show Answer Correct Answer: A) Aorta. 4. Located between the right ventricle and the pulmonary artery A) Tricuspid valve. B) Pulmonary valve. C) Mitral valve. D) Aortic valve. Show Answer Correct Answer: B) Pulmonary valve. 5. These are tubes that carry blood back to the heart: A) Arteries. B) Veins. C) Valve. D) Vessels. Show Answer Correct Answer: B) Veins. 6. Cell found in blood that delivers oxygen to body cells A) Red blood cells. B) White blood cells. C) Platelets. D) None of above. Show Answer Correct Answer: A) Red blood cells. 7. Which vein transfer OXYGENATED BLOOD A) Vena cava. B) Pulmonary vein. C) Aorta. D) Pulmonary artery. Show Answer Correct Answer: B) Pulmonary vein. 8. Your heart has two sides and four chambers, or rooms. Based on what you read, the upstairs rooms are called ....., and the downstairs rooms are called ..... A) Valves and Ventricles. B) Valves and Chambers. C) Atria and Ventricles. D) Chambers and Vessels. Show Answer Correct Answer: C) Atria and Ventricles. 9. Our heart is ..... A) A tissue. B) A body system. C) A group of cells. D) An organ. Show Answer Correct Answer: D) An organ. 10. What is one of the parts in the circulatory system? A) Heart. B) SKin. C) Bones. D) Muscles. Show Answer Correct Answer: A) Heart. 11. John has blood pressure 183/81, what is John's systolic pressure? A) 81. B) 183. C) 183/81. D) 81/183. Show Answer Correct Answer: B) 183. 12. True or False:The blood in your veins is blue A) True. B) False. Show Answer Correct Answer: B) False. 13. What is the main organ in the respiratory system? A) Lungs. B) Heart. C) Vein. D) Artery. Show Answer Correct Answer: A) Lungs. 14. How many % of blood is liquid? A) 35 %. B) 45 %. C) 55 %. D) 65 %. Show Answer Correct Answer: C) 55 %. 15. The blood vessel that bring blood out of heart is ..... A) Arteries. B) Veins. C) Capillaries. D) All answers are correct. Show Answer Correct Answer: A) Arteries. 16. What is the correct path of blood through the heart chambers? A) Atrium to ventricle. B) Ventricle to atrium. Show Answer Correct Answer: A) Atrium to ventricle. 17. What side of your heart pumps out the blood that's already been to your lungs and is now full of oxygen A) Up. B) Down. C) Left. D) Right. Show Answer Correct Answer: C) Left. 18. Blood vessels that are the smallest and connect arteries to veins A) Arteries. B) Veins. C) Capillaries. D) Valves. Show Answer Correct Answer: C) Capillaries. 19. The pulmonary vein carries ..... A) A-Oxygenated blood. B) B-deoxygenated blood. C) Both a & b. D) None of above. Show Answer Correct Answer: A) A-Oxygenated blood. 20. During the gas exchange process of the blood by the lungs, what enters from alveoli to the capillaries? A) Ill. B) CO. C) O2. D) Nitrogen. Show Answer Correct Answer: C) O2. ← 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