This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 463 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 463 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. After the blood gets oxygenated in the lungs, to which part of the heart does it return? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: C) Left atrium. 2. What are the 4 parts of blood? A) Red blood cells, plasma, white blood cells, marrow. B) Red blood cells, white blood cells, platelets, plasma. C) Red blood cells, platelets, plasma, water. D) Red blood cells, white blood cells, platelets, marrow. Show Answer Correct Answer: B) Red blood cells, white blood cells, platelets, plasma. 3. The heart is divided into four parts or chambers-the lower chambers are called ..... A) Atriums. B) Ventricles. C) Atria. D) Centrioles. Show Answer Correct Answer: B) Ventricles. 4. Which blood vessel contains tiny valves? A) Artery. B) Vein. C) Capillary. D) None of above. Show Answer Correct Answer: B) Vein. 5. What blood vessel brings blood that is high in oxygen from the lungs to the heart? A) Pulmonary vein. B) Pulmonary artery. C) Aorta. D) Vena cava. Show Answer Correct Answer: A) Pulmonary vein. 6. One of the moat important jobs of the circulatory system is to A) Supply oxygen to all the cells in the body. B) Supply water to all the cells in the body. Show Answer Correct Answer: A) Supply oxygen to all the cells in the body. 7. A heart attack can occur when ..... A) Blockage of circulation to the brain. B) Blocked blood vessel in the heart. C) Low levels of plague. D) None of above. Show Answer Correct Answer: B) Blocked blood vessel in the heart. 8. Which blood vessel connects arteries to veins so that blood can start moving back to the heart? A) Veins. B) Capillaries. C) Arteries. D) None of above. Show Answer Correct Answer: B) Capillaries. 9. What is the title of Chapter 3? A) The Muscular System and the Circulatory System. B) Sidney and Her Body. C) The Digestive System. D) None of above. Show Answer Correct Answer: A) The Muscular System and the Circulatory System. 10. Blood Vessels that brings blood back in to the heart are called A) Arteries. B) Veins. C) Capillaries. D) White blood cells. Show Answer Correct Answer: B) Veins. 11. Cell fragments of megakaryocytes yield ..... A) Erythrocytes. B) Granulocyte. C) Agranulocyte. D) Blood platelets. Show Answer Correct Answer: D) Blood platelets. 12. Which type of agranulocyte has a really large nucleus and provides immunity? A) Lymphocyte. B) Monocyte. C) Red blood cell. D) Basophil. Show Answer Correct Answer: A) Lymphocyte. 13. Blood in mammals is contains platelets (thrombocytes) that A) Contain haemoglobin that binds and transports oxygen and carbon dioxide. B) Play roles in the immune system such as engulfing pathogens and producing antibodies. C) Are fragments of cells that prevent blood loss and ensure that blood clots. D) Contains dissolved ions, gasses, proteins and hormones. Show Answer Correct Answer: C) Are fragments of cells that prevent blood loss and ensure that blood clots. 14. Plasma makes up what percentage of your blood? A) 55%. B) 45%. C) 1%. D) 75%. Show Answer Correct Answer: A) 55%. 15. Which leukocyte produces histamine in response to an allergen? A) Neutrophils. B) Monocytes. C) Eosinophils. D) Basophils. Show Answer Correct Answer: D) Basophils. 16. Which chamber of the heart has a thick muscular wall to pump blood round the body? A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 17. What is another name for heart attack? A) Hypertension. B) Myocardial Infarction. C) Atherosclerosis. D) Arteriosclerosis. Show Answer Correct Answer: B) Myocardial Infarction. 18. About how big is the human heart? A) The size of your nose. B) The size of your foot. C) The size of your fist. D) The size of your ear. Show Answer Correct Answer: C) The size of your fist. 19. The blood that comes through the vena cava is: A) Oxygen poor. B) Oxygen rich. Show Answer Correct Answer: A) Oxygen poor. 20. What is the purpose of antibodies? A) To pump lymph through the vessels. B) To create lymph. C) To fight infection. D) To remove old red blood cells. Show Answer Correct Answer: C) To fight infection. ← 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