This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 304 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 304 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is plasma? A) The liquid part of the blood that carries all of the other blood cells around the body. B) The thing which makes blood red. C) The substance that comes out of a storm troopers blaster. D) The cells which take oxygen from the lungs. Show Answer Correct Answer: A) The liquid part of the blood that carries all of the other blood cells around the body. 2. Which blood vessels contain oxygen rich blood? A) Capillaries. B) Veins. C) Arteries. D) None of above. Show Answer Correct Answer: C) Arteries. 3. Veins carry A) Blood with oxygen. B) Blood with carbon dioxide. Show Answer Correct Answer: B) Blood with carbon dioxide. 4. ..... Very small tubes that extend from arteries to capillaries A) Veins. B) Capillaries. C) Arteriole. D) Venule. Show Answer Correct Answer: C) Arteriole. 5. ..... is defined as abnormal heart rate A) Atherosclerosis. B) High blood pressure. C) Arrhythmia. D) Prolapsed valves. Show Answer Correct Answer: C) Arrhythmia. 6. What are the tiny blood vessels where substances are exchanged between the blood and body cells? A) Arteries. B) Capillaries. C) Veins. D) Ventricles. Show Answer Correct Answer: B) Capillaries. 7. What is Haemoglobin? A) Iron rich protein that transports oxygen in the blood cells. B) Blood Cells. C) Blood Vessels. D) A type of Capillary. Show Answer Correct Answer: A) Iron rich protein that transports oxygen in the blood cells. 8. Ventricles receive the blood into the heart while the atriums pump it out. A) False. B) True. Show Answer Correct Answer: A) False. 9. Which one of them has an open circulatory system? A) Human. B) Insect. C) Earth worm. D) Bird. E) Mammal. Show Answer Correct Answer: B) Insect. 10. ..... take in oxygen and releases carbon dioxide as we breathe. A) Nose/mouth. B) Lungs. C) Trachea. D) Diaphragm. Show Answer Correct Answer: B) Lungs. 11. Closed type of circulation is not seen in ..... A) Earthworm. B) Molluscs Mollusca. C) Cockroach cockroach. D) All the above. Show Answer Correct Answer: C) Cockroach cockroach. 12. Artery carrying oxygen-poor blood from the heart to the lungs A) Pulmonary artery. B) Superior vena cava. C) Inferior vena cava. D) Aortic valve. Show Answer Correct Answer: A) Pulmonary artery. 13. A clot that attaches to the inner surface of a blood vessel is called a(n) ..... A) Hematoma. B) Thrombus. C) Scab. D) Embolus. Show Answer Correct Answer: B) Thrombus. 14. A blood donor with A type blood can give blood to people with what types of blood? A) B and AB. B) All types. C) O. D) A and AB. Show Answer Correct Answer: D) A and AB. 15. Which blood vessel has very thin, fragile walls and is where capillary exchange takes place? A) Veins. B) Blood Plasma. C) Arteries. D) Capillaries. Show Answer Correct Answer: D) Capillaries. 16. What are blood vessels? A) Organs that filter blood. B) Cells that produce blood. C) Hollow tubes that carry blood through the entire body. D) Bones that support the circulatory system. Show Answer Correct Answer: C) Hollow tubes that carry blood through the entire body. 17. White blood cells are referred to as A) Erythrocyte. B) Leukocyte. C) Thrombocytes. D) None of above. Show Answer Correct Answer: B) Leukocyte. 18. What structure keeps blood flowing in the correct direction and prevent backflow or mixing of the blood? A) Valves. B) Arteries. C) Veins. D) Chambers. Show Answer Correct Answer: A) Valves. 19. ..... of blood is formed elements. A) 45%. B) 55%. C) 25%. D) 50%. Show Answer Correct Answer: A) 45%. 20. A ..... prevents blood from flowing backwards in the heart. A) Valve. B) Chamber. C) Atrium. D) Ventricle. Show Answer Correct Answer: A) Valve. ← 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