This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 437 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 437 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In the walls of the heart, what do you call the layers of tissue that helps the heart pump blood? A) Epicardium. B) Cardiac muscle. C) Endocardium. D) Myocardium. Show Answer Correct Answer: C) Endocardium. 2. Which contract in unison? A) Top chambers, then bottom chambers. B) Right Chambers, then the Left Chambers. C) All four chambers beat in unison. D) None of above. Show Answer Correct Answer: A) Top chambers, then bottom chambers. 3. The most important function of the heart is that it facilitates the oxygenation of deoxygenated blood so that body organs receive oxygen A) True. B) False. Show Answer Correct Answer: A) True. 4. Arteries carry blood under ..... A) High pressure. B) Very low pressure. C) Valves. D) Lungs. Show Answer Correct Answer: A) High pressure. 5. What causes atherosclerosis? A) Thickening of vessels' wall. B) An increase in blood viscosity. C) Accumulation of fatty materials. D) An increase in blood volume. Show Answer Correct Answer: C) Accumulation of fatty materials. 6. The valves between the right atria and right ventricle is known as the ..... valve. A) Tricuspid valve. B) Aortic valve. C) Bicuspid valve. D) Pulmonary valve. Show Answer Correct Answer: A) Tricuspid valve. 7. What are the parts of the heart and what is the order in that the blood pass? A) R atrium Ventricle Bone Ventricle. B) R AtriumR ventricleL AtriumL Ventricle. C) L VentricleR AtriumR VentricleL Atrium. D) None of above. Show Answer Correct Answer: B) R AtriumR ventricleL AtriumL Ventricle. 8. What are blood vessels that carry blood away from the heart to other parts of the body (oxygenated blood)? A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: A) Arteries. 9. What is the septum's function in the heart? A) To pump blood. B) To refill the atria. C) To separate the left and right sides of the heart. D) To act as a valve. Show Answer Correct Answer: C) To separate the left and right sides of the heart. 10. What is the yellowish liquid part of blood that carries water, nutrients, hormones, dissolved gases and helps to maintain homeostasis within the body? A) Red blood cells. B) White blood cells. C) Plasma. D) None of above. Show Answer Correct Answer: C) Plasma. 11. What part of the brain controls your heart rate? A) Cerebrum. B) Cerebellum. C) Pons. D) Spinal cord elongated. Show Answer Correct Answer: D) Spinal cord elongated. 12. Composed of simple layer of endothelial cells (specialized epithelium) A) Endothelium. B) Subendothelium. C) Internal Elastic Lamina. D) External Elastic Lamina. Show Answer Correct Answer: A) Endothelium. 13. What does an atrium do A) Let blood in. B) Let blood out. C) Exchange gases. D) Remove waste. Show Answer Correct Answer: A) Let blood in. 14. What happens at number 2? A) Blood enters the heart from the lungs. B) Blood goes to the lungs to become oxygenated. C) Blood travels around the body. D) Blood enters the heart from around the body. Show Answer Correct Answer: D) Blood enters the heart from around the body. 15. What organ releases erythropoetin? A) Brain. B) Liver. C) Bone marrow. D) Kidney. Show Answer Correct Answer: D) Kidney. 16. Which of the following is the smallest blood vessel in the circulatory system? A) Capillaries. B) Artery. C) Vein. D) Muscles. Show Answer Correct Answer: A) Capillaries. 17. The heart, veins, capillaries and arteries work together to ..... A) Produce oxygen. B) Produce carbon dioxide. C) Grow new cells on the skin surface. D) Transport materials throughout the body. Show Answer Correct Answer: D) Transport materials throughout the body. 18. What happens when your body gets the wrong type of blood? A) Antibodies check it out. B) Antibodies attack it immediately to destroy it. C) Nothing. D) Trap it. Show Answer Correct Answer: B) Antibodies attack it immediately to destroy it. 19. What is the name of the heart muscle A) Rib cage. B) Cardiac muscle. C) Lung muscle. D) Atrium muscle. Show Answer Correct Answer: B) Cardiac muscle. 20. A patient was diagnosed with a disease which affected the passage of blood from the right atrium to the right ventricle. Which structure is most likely affected? A) Bicuspid valve. B) Mitral Valve. C) Aortic Valve. D) Pulmonary Valve. E) Tricuspid Valve. Show Answer Correct Answer: E) Tricuspid Valve. ← 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