This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 681 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 681 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Valves are important because they keep blood moving A) To the left. B) In one direction. C) To the right. D) None of above. Show Answer Correct Answer: B) In one direction. 2. Where does oxygen get diffused into the bloodstream? A) Trachea. B) Esophagus. C) Villi. D) Alveoli. E) Epiglottis. Show Answer Correct Answer: D) Alveoli. 3. Brings Oxygen, nutrients and hormones to cells, fights infection, this function of circulatory system is known as ..... A) Elimination. B) Transportation. C) Pumping. D) None of above. Show Answer Correct Answer: B) Transportation. 4. Tissue fluid supplies respiring cells with: A) Oxygen and Glucose. B) Carbon Dioxide and Glucose. C) Lactic Acid & Oxygen. D) Water & Carbon dioxide. Show Answer Correct Answer: A) Oxygen and Glucose. 5. 13 A) Aortic valve. B) Mitral valve. C) Tricuspid valve. D) Pulmonary valve. Show Answer Correct Answer: D) Pulmonary valve. 6. The function of the valves is to ..... A) Allow for the contraction of the heart. B) Prevent back-flow. C) Oxygenate the blood. D) Supply the myocardium with oxygen. Show Answer Correct Answer: B) Prevent back-flow. 7. The thickest and strongest blood vessel is the A) Vein. B) Artery. C) Capillary. D) Both veins and capillaries. Show Answer Correct Answer: B) Artery. 8. What is the vein that transports deoxygenated blood to the right atrium of the heart? A) Renal vein. B) Pulmonary vein. C) Inferior vena cava. D) Aorta. Show Answer Correct Answer: C) Inferior vena cava. 9. The order of the major circulatory systems is..... A) Right ventricle-pulmonary artery-lung-pulmonary vein-left atrium. B) Left ventricle-large artery (aorta)-arteries-whole body-veins-right atrium. Show Answer Correct Answer: B) Left ventricle-large artery (aorta)-arteries-whole body-veins-right atrium. 10. Find the correct statement(s) about WBCsi) They are non-nucleatedii) They are colourlessiii) Number of cells 60000-80000 mm-3 of bloodiv) There are two main categories of WBCs-granulocytes and agranulocytes. A) I and ii. B) Ii and iii. C) Iii and iv. D) Ii and iv. Show Answer Correct Answer: D) Ii and iv. 11. RBCs are also called A) Leucocytes. B) Platelets. C) Erythrocytes. D) White blood cells. Show Answer Correct Answer: C) Erythrocytes. 12. Blood goes to the BODY to ..... A) Deliver oxygen. B) Deliver carbon dioxide. Show Answer Correct Answer: A) Deliver oxygen. 13. Flesh A) Search. B) Scler/o. C) My/o. D) Ather/o. Show Answer Correct Answer: A) Search. 14. The left ventricle pumps out A) Oxygenated blood. B) Deoxygenated blood. Show Answer Correct Answer: A) Oxygenated blood. 15. Every cell must live near one (may have multiple answers) A) Arteries. B) Veins. C) Capillaries. D) Alveoli. Show Answer Correct Answer: C) Capillaries. 16. Most numerous cell in the blood A) White blood cells. B) Red blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: B) Red blood cells. 17. What part of the blood is the liquid part that carries nutrients? A) Plasma. B) White blood cells. C) Red blood cells. D) Platelets. Show Answer Correct Answer: A) Plasma. 18. This chamber pumps oxygenated blood to other parts of the body through the aorta. A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 19. What is the function of lymphocytes in the circulatory system? A) To fight infection. B) To transport nutrients. C) To regulate body temperature. D) To carry oxygen. Show Answer Correct Answer: A) To fight infection. 20. There are ..... layers of the heart wall. A) One. B) Two. C) Three. D) Four. Show Answer Correct Answer: C) Three. ← 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