This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 170 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 170 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does blood get from the left side of the heart to the right side of the heart? A) It goes through the walls of the heart. B) It flows out of the left side through the arteries and veins, through the body, and back into the right side. C) It pushes through the valves in the heart back and forth without going through the body. D) None of above. Show Answer Correct Answer: B) It flows out of the left side through the arteries and veins, through the body, and back into the right side. 2. Opens to allow oxygen-rich blood to pass from the left ventricle into the aorta, your body's largest artery, where it is delivered to the rest of your body A) Aortic semilunar valve. B) Bicuspid (mitral) valve. C) Because of the difference. D) AV node. E) AV node. Show Answer Correct Answer: A) Aortic semilunar valve. 3. Oxygenated blood enters the heart through which chamber? A) Right atrium. B) Left atrium. C) Left Ventricle. D) Right Ventricle. Show Answer Correct Answer: B) Left atrium. 4. How much of your blood is liquid A) 55%. B) 45%. C) 70%. D) 30%. Show Answer Correct Answer: A) 55%. 5. I wrap around muscles & alveoli to allow GAS EXCHANGE A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 6. What is the function of the pulmonary artery? A) Carries deoxygenated blood from the right ventricle to the lungs. B) Carries oxygenated blood from the lungs to the left ventricle. C) Carries deoxygenated blood from the body to the right atrium. D) Carries oxygenated blood from the left ventricle to the body. Show Answer Correct Answer: A) Carries deoxygenated blood from the right ventricle to the lungs. 7. The function of white blood cells is to A) Carry carbon dioxide. B) Maintain water balance in the blood. C) Carry wastes away. D) Fight diseases. Show Answer Correct Answer: D) Fight diseases. 8. What is the function of lymph nodes? A) To trap blood in the capillaries. B) To trap disease-causing bacteria. C) To move lymph into the heart. D) To help you sweat. Show Answer Correct Answer: B) To trap disease-causing bacteria. 9. The heart is made up of ..... chambers. A) 2. B) 4. Show Answer Correct Answer: B) 4. 10. Which activity should keep your heart rate the lowest? A) Jogging in place. B) Jumping jacks. C) Stretching. D) Sprints. Show Answer Correct Answer: C) Stretching. 11. True or False. Veins have one-way valves that prevent backflow of blood. A) True. B) False. Show Answer Correct Answer: A) True. 12. Heart relaxes A) Diastole. B) Systole. Show Answer Correct Answer: A) Diastole. 13. Cross heterozygous A blood with homozygous B blood A) AB, B, O. B) AB, B. C) AB, A, O. D) AB, A. Show Answer Correct Answer: B) AB, B. 14. Why is the left ventricle larger than the right ventricle? A) The left ventricle is made first during growth. B) The right ventricle gets injured as you grow. C) The left ventricle needs to pump more blood to the entire body and the right ventricle only pumps blood to the lungs. D) The left ventricle needs to pump more blood to the lungs and the right ventricle only pumps blood to the body. Show Answer Correct Answer: C) The left ventricle needs to pump more blood to the entire body and the right ventricle only pumps blood to the lungs. 15. What is responsible for transporting oxygen and carbon dioxide around the body? A) White blood Cells. B) Platelets. C) Red Blood Cells. D) Plasma. Show Answer Correct Answer: C) Red Blood Cells. 16. Which is located within the walls of the ventricles? A) Purkinje fibers. B) Because of the difference. C) AV node. D) AV bundle and branches. Show Answer Correct Answer: A) Purkinje fibers. 17. Which blood vessel carries blood from the heart to the lungs to receive oxygen? A) Aorta. B) Vena Cava. C) Pulmonary Artery. D) Pulmonary Vein. Show Answer Correct Answer: C) Pulmonary Artery. 18. What can happen sometimes when you stand up to quickly? A) You become light-headed. B) Your blood stays down at your legs and feet. C) Your blood does not get to your head fast enough. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. The name given to the heart, blood vessels, and blood which transport oxygen and nutrients to all parts of the body, as well as carries away waste products. A) Muscular System. B) Digestive System. C) Respiratory System. D) Circulatory System. Show Answer Correct Answer: D) Circulatory System. 20. Which does not have lungs? A) Mammal. B) Bird. C) Reptile. D) Fish. Show Answer Correct Answer: D) Fish. ← 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