This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 301 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 301 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Substances dissolved in the blood simply diffuse from thin-walled capillaries to the nearby cells. It distribute blood faster to a greater number of cells A) Closed transport system. B) Open transport system. C) Heart. D) Circulatory system. Show Answer Correct Answer: A) Closed transport system. 2. The tunica externa found in the walls of certain blood vessels is made up of MAINLY A) Elastic fibres. B) Collagen fibres. C) Smooth muscle. D) Squamous epithelium. Show Answer Correct Answer: B) Collagen fibres. 3. This type of blood vessels bring blood from the heart A) Arteries. B) Capillaries. C) Veins. D) Heart. Show Answer Correct Answer: A) Arteries. 4. This type of cell causes clotting where there is injury. A) Red blood cell. B) White blood cell. C) Platelets. D) Plasma. Show Answer Correct Answer: C) Platelets. 5. -Components of the bloodPlatelets A) Part of the immune system that fights infection and other foreign bodies. B) Responsible for blood clotting. C) Main component of blood, consists mainly of water with proteins, ions, nutrients and wastes. D) None of above. Show Answer Correct Answer: B) Responsible for blood clotting. 6. True or False:Veins carry co2 blood A) True. B) False. Show Answer Correct Answer: A) True. 7. What are arteries responsible for? A) Transporting oxygen rich blood to the heart. B) Transporting oxygen rich blood away from veins. Show Answer Correct Answer: B) Transporting oxygen rich blood away from veins. 8. This type of circulation is when blood rich in nutrients from the small intestine travels to the liver. A) Renal circulation. B) Hepatic Portal circulation. C) Systemic circulation. D) Pulmonary circulation. Show Answer Correct Answer: B) Hepatic Portal circulation. 9. What is the circulatory system's main purpose? A) Delivers oxygen and nutrients to all the cells in the body and carbon and waste to the lungs through blood vessels. B) Breaks down food in order to provide nutrients to all major organs in the body. C) Regulates hormones that are important in the processes of all other body systems. D) Sends messages between the brain and the muscles in order to control our body's stimulus and response processes. Show Answer Correct Answer: A) Delivers oxygen and nutrients to all the cells in the body and carbon and waste to the lungs through blood vessels. 10. Which blood cells make up one part of the body's defense system? A) White Blood Cells. B) Red Blood Cells. C) Platelets. D) Plasma. Show Answer Correct Answer: A) White Blood Cells. 11. .During diastole, the heart is in a(n) ..... state A) Relaxed. B) Excited. C) B. Active. D) None of above. Show Answer Correct Answer: A) Relaxed. 12. How many directions does blood travel in? A) One direction. B) Two directions, one for each side of your heart. C) 70 directions. D) 360 direction. Show Answer Correct Answer: A) One direction. 13. Oxygen-rich blood gets pumped from the left atrium, through the A.V. valve to the ..... A) Superior vena cava. B) Lungs. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 14. In the correct sequence of the cardiac conduction system, an impulse will travel to from the AV node to the ..... ? A) Purkinje fibers. B) AV node. C) Bundle of His. D) Right and left bundle branches. Show Answer Correct Answer: C) Bundle of His. 15. The Circulatory System is made of: A) Blood, blood vessels and heart. B) The lungs and heart. C) The heart and vessels. D) The blood and lungs. Show Answer Correct Answer: A) Blood, blood vessels and heart. 16. Blood groups are determined by protein molecules present on the surface of RBCs A) True. B) False. Show Answer Correct Answer: A) True. 17. Contraction phase of the heartbeat is called ..... A) Systole. B) Diastole. C) Contractility. D) Venous return. Show Answer Correct Answer: A) Systole. 18. The circulatory system is A) The main support system of the body. B) The main transport system of the body. C) The main excretory system of the body. D) None of above. Show Answer Correct Answer: B) The main transport system of the body. 19. What heart chamber sends oxygenated blood into the aorta? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 20. Voice box; passageway for air moving from the pharynx to trachea; contains vocal cords A) Larynx. B) Pharynx. C) Trachea. D) Bronchus. Show Answer Correct Answer: A) Larynx. ← 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