This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 244 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 244 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which chamber of the heart has the thickest, strongest muscle for pumping oxygenated blood out to the entire body? A) Left atrium. B) Right atrium. C) Left ventricle. D) Right ventricle. Show Answer Correct Answer: C) Left ventricle. 2. What do the cells in our body need to live? A) Hydrogen. B) Oxygen. C) Nitrogen. D) None of above. Show Answer Correct Answer: B) Oxygen. 3. Which of the following does NOT assist in the return of venous blood to the heart? A) Veins have one-way valves. B) The contraction of skeletal muscles squeeze the vein. C) Veins have a larger diameter therefore can hold more blood. D) The contraction of muscle layers in the veins keeps the blood flowing in the right direction. Show Answer Correct Answer: D) The contraction of muscle layers in the veins keeps the blood flowing in the right direction. 4. During a physical education class, Grace, Ethan, and Lily are participating in a running exercise. What happens to their heart rate during the exercise? A) It stays the same. B) It decreases. C) It increases. D) It becomes irregular. Show Answer Correct Answer: C) It increases. 5. What is the main artery called? A) Heart. B) Ventricle. C) Aorta. D) Atrium. Show Answer Correct Answer: C) Aorta. 6. The correct blood flow is A) Aorta-right ventricle-right atrium-pulmonary veins-lungs-pulmonary arteries-right ventricle-right atrium-vena cava-body. B) Vena cava-right atrium-right ventricle-pulmonary arteries-lungs-pulmonary veins-left atrium-left ventricle-aorta body. C) Vena cava-left atrium-right atrium-pulmonary veins-lungs-pulmonary arteries-right ventricle-left ventricle-aorta-body. D) None of above. Show Answer Correct Answer: B) Vena cava-right atrium-right ventricle-pulmonary arteries-lungs-pulmonary veins-left atrium-left ventricle-aorta body. 7. Heart consists of ..... A) 2 atriums. B) 2 ventricles. C) 2 atriums and 2 ventricles. D) 1 atrium and 1 ventricle. Show Answer Correct Answer: C) 2 atriums and 2 ventricles. 8. I am very thin and I am the branch of arteries. Who am I? A) Veins. B) Vessels. C) Capillaries. D) Neuron. Show Answer Correct Answer: C) Capillaries. 9. Congestive Heart Failure A) Artery becomes clogged with fatty material. B) To remove/compress deposits in arteries, or to insert a stent. C) Heart muscles do not beat adequately to supply the blood needs of the body. D) Foreign substance circulating in blood. Show Answer Correct Answer: C) Heart muscles do not beat adequately to supply the blood needs of the body. 10. Systemic Circulation is the movement of blood through the tissues of the heart. A) True. B) False. Show Answer Correct Answer: B) False. 11. The Circulatory System is a ..... System. A) Transport. B) Both. C) Protective. D) None of these. Show Answer Correct Answer: A) Transport. 12. How do you say "bombea sangre" in English? A) Drinks blood. B) Pumps blood. C) Carry blood. D) None of above. Show Answer Correct Answer: B) Pumps blood. 13. The largest artery in the body; carries blood into the vast network of arteries and arterioles that supply capillaries with oxygen-rich blood A) Arteries. B) Veins. C) Aorta. D) Atria. Show Answer Correct Answer: C) Aorta. 14. An animal that hunts other animals for food is a ..... A) Herbivore. B) Predator. C) Prey. D) Omnivore. Show Answer Correct Answer: B) Predator. 15. The liquid portion of the blood that is straw colored is called: A) Plasma. B) Globulin. C) Lymph. D) Albumin. Show Answer Correct Answer: A) Plasma. 16. An element that makes up about 21% of Earth's atmosphere; a gas in Earth's atmosphere and in water that living organisms breathe. A) Oxygen. B) Carbon dioxide. C) Blood. D) Hydrogen. Show Answer Correct Answer: A) Oxygen. 17. Vena cavea carry the blood containing oxygen from the body to the heart A) True. B) False. Show Answer Correct Answer: B) False. 18. All of the following occur when the ventricles contract except A) The AV valves close. B) Blood is ejected into the aorta. C) The semilunar valves open. D) Blood from the pulmonary trunk enters the atria. Show Answer Correct Answer: D) Blood from the pulmonary trunk enters the atria. 19. What special protein molecule do red blood cells use to carry oxygen? A) Insulin. B) Haemoglobin. C) Antibodies. D) Plasma. Show Answer Correct Answer: B) Haemoglobin. 20. Contain valves to prevent backflow of blood: A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. ← 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