This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 346 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 346 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The bigger an animal is the ..... its heart rate will generally be. A) Faster. B) Slower. C) Nothing, doesn't matter. D) None of above. Show Answer Correct Answer: B) Slower. 2. Which of the following statement is true about transportation in multicellular organism? A) Has large TSA/V ratio. B) Has size that are usually small and thin. C) The exchange of substance between body and external cannot happen through diffusion. D) The body cells are close to the external environment. Show Answer Correct Answer: C) The exchange of substance between body and external cannot happen through diffusion. 3. Which side of the heart receives and pumps oxygenated blood? A) Left. B) Right. C) Upper. D) Lower. Show Answer Correct Answer: A) Left. 4. T/F-During an average lifetime, the heart pumps enough blood to fill two large ocean tankers. A) True. B) False. Show Answer Correct Answer: A) True. 5. Smaller branches of veins A) ARTERIOLES. B) AORTA. C) VENULES. D) VENA CAVA. Show Answer Correct Answer: C) VENULES. 6. What blood vessel has valves inside of them to help prevent the backflow of blood in the circulatory system? A) Capillaries. B) Veins. C) Arteries. D) Blood cells. Show Answer Correct Answer: B) Veins. 7. LEFT ventricle a A) A 4. B) B 2. C) C 1. D) D 6. Show Answer Correct Answer: A) A 4. 8. This carries and transport oxygen A) R.b.c. B) W.b.c. Show Answer Correct Answer: A) R.b.c. 9. What keeps blood from flowing back into a chamber of the heart? A) Aorta. B) Vein. C) Artery. D) Valve. Show Answer Correct Answer: D) Valve. 10. When the blood vessels' diameter increases and the vessels expand, transporting more blood to the skin. A) Vasodilation. B) Vasoconstriction. C) Hypertension. D) Heart rate. Show Answer Correct Answer: A) Vasodilation. 11. Which of the body's systems is responsible for transporting oxygen rich blood throughout the body? A) The skeletal system. B) The digestive system. C) The respiratory system. D) The circulatory system. Show Answer Correct Answer: D) The circulatory system. 12. What is the main function of the pulmonary artery in the circulatory system? A) Carry oxygenated blood to the body. B) Carry deoxygenated blood to the lungs. C) Involved in the clotting process of the blood following an injury. D) Protect against disease and harmful bacteria; produce antibodies. Show Answer Correct Answer: B) Carry deoxygenated blood to the lungs. 13. What is the name of the AV valve on the right side of the heart? A) Arterial. B) Tricuspid. C) Bicuspid. D) None of above. Show Answer Correct Answer: B) Tricuspid. 14. Define what white blood cells (WBCs) do. A) Yellowish liquid that contains water, nutrients, salts and gases. B) Carry oxygen to the cells and carry carbon dioxide away. C) Attack invading microorganisms. D) Fragments of cells that help with blood clotting; they stop bleeding. Show Answer Correct Answer: C) Attack invading microorganisms. 15. Blood vessels that carry deoxygenated blood (with high levels of carbon dioxide) is called: A) Arteries. B) Veins. C) Capillaries. D) None of the above. Show Answer Correct Answer: B) Veins. 16. What side of the heart has oxygenated blood? A) Left. B) Right. Show Answer Correct Answer: A) Left. 17. True or false:Blood traveling in veins is blue. A) True. B) False. Show Answer Correct Answer: B) False. 18. Our circulatory system comprises our heart, blood vessels, and the blood they contain. A) True. B) False. Show Answer Correct Answer: A) True. 19. Solid part of the blood that helps carry oxygen to the cells A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: A) Red blood cells. 20. What are RED BLOOD CELLS also called? A) RBCs. B) WBCs. C) Thrombocytes. D) RBCs ( Erythrocytes). Show Answer Correct Answer: D) RBCs ( Erythrocytes). ← 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