This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 285 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 285 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This disease of the cardiovascular system is characterized by fatty deposits (plaque) in walls of arterieswhich can obstruct flow of blood and raise blood pressure. A) Cardiac Arrest. B) Septal Defect. C) Atherosclerosis. D) Aortic Stenosis. Show Answer Correct Answer: C) Atherosclerosis. 2. Lets oxygen-rich blood from your lungs pass from the left atrium into the left ventricle A) Bicuspid (mitral) valve. B) Pulmonary semilunar valve. C) Tricuspid valve. D) Atria. Show Answer Correct Answer: A) Bicuspid (mitral) valve. 3. When the heart relaxes blood is pushed into the arteries. A) True. B) False. Show Answer Correct Answer: B) False. 4. These are structures that keep blood flowing in one direction A) Septum. B) Valves. C) Bronchioles. D) Neurons. Show Answer Correct Answer: B) Valves. 5. What is the primary muscle used in the process of inhalation? A) Abdominal muscles. B) Intercostal muscles. C) Pectoral muscles. D) Diaphragm. Show Answer Correct Answer: D) Diaphragm. 6. What is a part of the circulatory system? A) Heart, brain, muscle, skeleton. B) Heart, Veins, Arteries, Capillaries. C) Spine, Veins, Brain, Small Intestine. D) Bones, Muscle, Kidneys, Nerves. Show Answer Correct Answer: B) Heart, Veins, Arteries, Capillaries. 7. Normal heart rate range for adults is: A) 60-100. B) 80-120. C) 100 and up. D) 60 and below. Show Answer Correct Answer: A) 60-100. 8. What is the smallest blood vessel in the circulatory system? A) Veins. B) Arteries. C) Capillaries. D) Lymph vessels. Show Answer Correct Answer: C) Capillaries. 9. In the blood clotting process, Fibrinogen is converted into fibrin threads. The function of Fibrin threads is..... A) Covers red blood cells. B) Prevent blood from leaving the body. C) Covered with blood clots. D) Covers damaged tissue surfaces. Show Answer Correct Answer: D) Covers damaged tissue surfaces. 10. Which disease of the circulatory system is an abnormal heart rate? A) High Blood Pressure. B) Atherosclerosis. C) Arrhythmia. D) Prolapsed Valve. E) Myocardial Infarction. Show Answer Correct Answer: C) Arrhythmia. 11. White blood cells remove ..... and ..... A) Dead cells / Prevent disease. B) Plasma / supply oxygen. C) Bone marrow / prevent bleeding. D) None of above. Show Answer Correct Answer: A) Dead cells / Prevent disease. 12. What are the three main components to the circulatory system? A) Blood, blood vessels, lungs. B) Blood, veins, lungs. C) Blood, blood vessels, heart. D) Blood, arteries, lungs. Show Answer Correct Answer: C) Blood, blood vessels, heart. 13. Using the data below, find the mode. Each day Mike the Emu likes to chase children off of his hill. Below is data for the amount of children he chased off each day this week. Sunday-2Monday-4Tuesday-15Wednesday-8Thursday-0 (he was sad this day)Friday-8Saturday-26 A) 9. B) 8. C) 26. D) 23. Show Answer Correct Answer: B) 8. 14. The circulatory system is composed of: A) Heart, blood and lungs. B) Heart, septum and blood. C) Vessels, blood and heart. D) None of above. Show Answer Correct Answer: C) Vessels, blood and heart. 15. What is the importance of lungs in the circulatory system? A) The lungs are responsible for oxygenating blood. B) They collect oxygen poor blood from all parts of the body and bring it to the heart. C) They receive oxygen-poor blood from the superior and inferior vena cavae and transports it to the right ventricle. D) They transport oxygen-rich blood to the aorta. Show Answer Correct Answer: A) The lungs are responsible for oxygenating blood. 16. Freshly oxygenated blood enters the heart through the ....., and is pumped out the ..... A) Right atrium; aorta. B) Left atrium; aorta. C) Right ventricle; pulmonary arteries. D) Left ventricle; pulmonary arteries. Show Answer Correct Answer: B) Left atrium; aorta. 17. Which blood cell fights disease and infection? A) White blood cells. B) Red blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: A) White blood cells. 18. The artery which supplies Oxygenated blood to the brain A) Aorta. B) Pulmonary. C) Capillaries. D) Carotid. Show Answer Correct Answer: D) Carotid. 19. Which is the vessel that carries low oxygen blood from the heart to the lungs? A) Pulmonary Vein. B) Pulmonary Artery. C) Pulmonary Capillary. D) Superior Vena Cava. Show Answer Correct Answer: B) Pulmonary Artery. 20. Name the disease where arteries have hardened because of plaque. A) Atherosclerosis. B) Myocardial Infarction. C) Arrhythmia. D) High Blood Pressure. Show Answer Correct Answer: A) Atherosclerosis. ← 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