This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 623 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 623 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body. A) Neutrophils. B) Thrombocyte. C) Erythrocyte. D) Leucocyte. Show Answer Correct Answer: B) Thrombocyte. 2. Oxygen-poor blood is: A) Blue. B) Dark red. C) Orange. D) Purple. Show Answer Correct Answer: B) Dark red. 3. What happens to blood pressure as it moves through capillaries? A) Increases. B) Remains the same. C) Decreases. D) Fluctuates. Show Answer Correct Answer: C) Decreases. 4. Oxygen rich blood is pumped from the left ventricle through this valve, then to the rest of the body: A) Pulmonary valve. B) Mitral valve. C) Tricuspid valve. D) Aortic valve. Show Answer Correct Answer: D) Aortic valve. 5. The ..... carry blood away from the heart to the body A) Veins. B) Arteries. Show Answer Correct Answer: B) Arteries. 6. In the circulatory system, what is the role of the pulmonary veins? A) Carry oxygenated blood to the lungs. B) Carry deoxygenated blood from the lungs to the heart. C) Carry oxygenated blood from the heart to the rest of the body. D) Carry deoxygenated blood from the body to the heart. Show Answer Correct Answer: A) Carry oxygenated blood to the lungs. 7. Which of the following is the liquid element of the blood? A) Platelets. B) Plasma. C) Red blood cell. D) White blood cell. Show Answer Correct Answer: B) Plasma. 8. What is gaseous exchange? A) The movement of Oxygen and Carbon Dioxide between the bronchi and pulmonary artery. B) The movement of Oxygen and Carbon Dioxide between the alveoli and bloodstream. C) The movement of Oxygen and Carbon Dioxide between the heart and lungs. D) The movement of Oxygen and Carbon Dioxide between the nasal cavity and heart. Show Answer Correct Answer: B) The movement of Oxygen and Carbon Dioxide between the alveoli and bloodstream. 9. The blood is made up of: A) Plasma, red blood cells, white blood cells and platelets. B) Red blood cells, white blood cells and green blood cells. C) Plasma, oxygen and carbondioxide. D) Platelets and plasma. Show Answer Correct Answer: A) Plasma, red blood cells, white blood cells and platelets. 10. The circulatory system helps provide oxygen to the body. A) True. B) False. Show Answer Correct Answer: A) True. 11. What does the blood deliver to organs? A) Carbon dioxide and energy. B) Nitrogen and potassium. C) Oxygen and nutrients. D) Food and nutrition. Show Answer Correct Answer: C) Oxygen and nutrients. 12. The veins ..... A) Carry blood away from the heart (ventricle). B) Carry blood to the heart (atria). C) Exchange gasses. D) No correct answer. Show Answer Correct Answer: B) Carry blood to the heart (atria). 13. Red blood cells hold onto O2 with the protein ..... which needs the element ..... A) Hemoglobin, phosphorus. B) Hemoglobin, iron. C) Myoglobin, phosphorus. D) Myoglobin, iron. Show Answer Correct Answer: B) Hemoglobin, iron. 14. The four parts of the blood are A) Plasma, platelets, red blood cells, white blood cells. B) Plasma, blue blood cells, white blood cells, red blood cells. C) Ventricle, atrium, vein, artery. D) None of above. Show Answer Correct Answer: A) Plasma, platelets, red blood cells, white blood cells. 15. If the blood in a persons heart is mixing, he/she probably has A) Heart attack. B) Heart valve disease. C) Thrombosis. D) Hemophilia. Show Answer Correct Answer: B) Heart valve disease. 16. These are the smallest blood vessels where exchange of gases take place. Which blood vessels have this function? A) Capillaries. B) Veins. C) Arteries. D) Arterioles. Show Answer Correct Answer: A) Capillaries. 17. The liquid part (yellowish) that carries nutrients A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: C) Plasma. 18. Largest Connective Tissue of the body is A) Skin. B) Blood. C) Nerves. D) Vessels. Show Answer Correct Answer: B) Blood. 19. How many valves are there in the heart? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: B) 4. 20. The liquid, pale yellow part of blood is called A) Plasma. B) Antigens. C) Blood cells. D) None of the above. Show Answer Correct Answer: A) Plasma. ← 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