This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 575 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 575 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Oxygenated blood A) Leaves from left side of the heart. B) Leaves from right side of the heart. C) Does not leave the lungs. D) Enters the lungs from the heart. Show Answer Correct Answer: A) Leaves from left side of the heart. 2. Main function is to fight infection; white blood cells A) Erythrocytes. B) Leukocytes. C) Thrombocytes. D) None of above. Show Answer Correct Answer: B) Leukocytes. 3. Strokes or "Brain Attacks": A) Can be caused by a ruptured aneurysm. B) Can be caused by a blood clot. C) Can be caused by a myocardial infarction. D) Can be caused by either a ruptured aneurysm or a blood clot. Show Answer Correct Answer: D) Can be caused by either a ruptured aneurysm or a blood clot. 4. Arteries, veins, and capillaries are different types of ..... A) Blood. B) Blood Tubes. C) Chambers. D) Blood Vessels. Show Answer Correct Answer: D) Blood Vessels. 5. Are the left and right part connected internally? A) No. B) Yes. C) May be. D) No idea. Show Answer Correct Answer: A) No. 6. It carries nutrients from food we eat and oxygen from the air we breathe around the body A) False. B) True. Show Answer Correct Answer: B) True. 7. Where can we find our heart? A) It's on the right side of our chest. B) It is on the left side of our chest. C) It is on the middle-left side of our chest. D) None of above. Show Answer Correct Answer: C) It is on the middle-left side of our chest. 8. What organ Is at the center of the Circulatory System? A) The Brain. B) Veins. C) The Heart. D) Lungs. Show Answer Correct Answer: C) The Heart. 9. Blood cells that function in blood clotting when injured are..... A) Erythrocyte. B) Leukocytes. C) Trombosit. D) Lymphocytes. Show Answer Correct Answer: C) Trombosit. 10. Carries blood containing food and oxygen away from the heart to the body A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: A) Arteries. 11. True or False:Capillaries are the smallest and thinnest of the blood vessels in the body and are also the most common. A) True. B) False. Show Answer Correct Answer: A) True. 12. Our CIRCULATORY SYSTEM is made up our heart, our blood vessels and the blood they contain. A) True. B) False. Show Answer Correct Answer: A) True. 13. The part of the blood that fights off germs is ..... A) Plasma. B) Platelets. C) White blood cells. D) Red blood cells. Show Answer Correct Answer: C) White blood cells. 14. What are the two types of Digestion? A) Chemical digestion & Mechanical digestion. B) Mechanical digestion & Muscular Digestion. C) Chemical digestion & Muscular digestion. D) Dermal digestion & Muscular digestion. Show Answer Correct Answer: A) Chemical digestion & Mechanical digestion. 15. David, Samuel, and Aria are conducting a science experiment. They are observing what happens to carbon dioxide when they breathe out. What do they observe about carbon dioxide in their lungs? A) It enters their bloodstream. B) It is converted into oxygen. C) It is released through their skin. D) It is exhaled. Show Answer Correct Answer: D) It is exhaled. 16. The aorta is the largest artery in the body. The blood leaving the aorta is full of? A) Oxygen. B) Carbon Dioxide. C) White blood Cells. D) Potassium. Show Answer Correct Answer: A) Oxygen. 17. In the lungs the blood A) Changes from red to blue. B) Takes in fresh oxygen. C) Takes in carbon dioxide. D) Moves little. Show Answer Correct Answer: B) Takes in fresh oxygen. 18. The blood of an insect is an effective carrier of oxygen. A) True. B) False. Show Answer Correct Answer: B) False. 19. What type of blood cell carries oxygen? A) Red blood cell. B) Leukocyte. C) White blood cell. D) Platelets. Show Answer Correct Answer: A) Red blood cell. 20. Which one allows gases and nutrients to enter the bloodstream? A) Arteries. B) Veins. C) Capillaries. D) Heart. Show Answer Correct Answer: C) Capillaries. ← 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