This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 184 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 184 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the smallest part of your body that is alive? A) Cell. B) Tissue. C) Organ. D) System. Show Answer Correct Answer: A) Cell. 2. How does the Circulatory System work with the Respiratory System? A) In order create movement in the muscles, they need oxygen. The body's oxygen transport system takes oxygen to the working muscles. B) The circulatory system supplies oxygen and nutrients to our bodies, without oxygen there would be no possible way for humans to live. C) Without messages from the brain the Circulatory system would not be able to work. D) None of above. Show Answer Correct Answer: B) The circulatory system supplies oxygen and nutrients to our bodies, without oxygen there would be no possible way for humans to live. 3. ..... ensure blood only travels in one direction. A) Valves. B) Arteries. C) Atria. D) Ventricles. Show Answer Correct Answer: A) Valves. 4. All chambers are separated by a(n) ..... that prevent backflow. A) Atrium. B) Ventricles. C) Septum. D) Valve. Show Answer Correct Answer: D) Valve. 5. Which is thicker:left or right ventricle? A) Left. B) Right. Show Answer Correct Answer: A) Left. 6. Circulation in a single-celled organism is controlled by ..... A) Cytoplasm. B) Nucleus. C) Plasma. D) Capillaries. Show Answer Correct Answer: A) Cytoplasm. 7. The force of circulating blood on the walls of the arteries. A) Cardiac output. B) Blood pressure. C) Stroke volume. D) Heart rate. Show Answer Correct Answer: B) Blood pressure. 8. Blood moves through blood vessels. A) True. B) False. Show Answer Correct Answer: A) True. 9. The heart sounds "lub" and "dub" result from ..... A) Opening of the heart valves. B) Firing of the nodes of the intrinsic conduction system. C) Blood rushing through the chambers. D) Closure of heart valves. Show Answer Correct Answer: D) Closure of heart valves. 10. What is the main function of valves in the circulatory system? A) To pump blood throughout the body. B) To prevent blood from moving in the wrong direction. C) To prevent platelets from clotting the blood. D) To keep the body stable. Show Answer Correct Answer: B) To prevent blood from moving in the wrong direction. 11. A person with Type O blood has ..... antibodies in the plasma. A) A. B) B. C) A & B. D) No. Show Answer Correct Answer: C) A & B. 12. A person's blood type is determined by the ..... that are on the surface of the red blood cells. A) Shapes. B) Antigens. C) Antibodies. D) Platelets. Show Answer Correct Answer: B) Antigens. 13. What are proteins broken down into A) Glucose. B) Amino Acids. C) Fatty acids and glycerol. D) Meat. Show Answer Correct Answer: B) Amino Acids. 14. The chemical present in red blood cells that binds to oxygen is called A) Amylase. B) Iron. C) Haemoglobin. D) Glucose. Show Answer Correct Answer: C) Haemoglobin. 15. Which type of cell is involved in oxygen transport? A) Red blood cell. B) White blood cell. C) Platelets. D) Plasma. Show Answer Correct Answer: A) Red blood cell. 16. How many chambers of heart do reptiles and amphibians have? A) Six. B) Three. C) Four. D) None of above. Show Answer Correct Answer: B) Three. 17. What sort of organism has a closed circulatory system with 2 chambers, (single pump) A) Mammal. B) Fish. C) Insect. D) Molusc. Show Answer Correct Answer: B) Fish. 18. What is the yellowish portion of our blood called? A) Plasma. B) Hemoglobin. C) Blood Cells . D) None of above. Show Answer Correct Answer: A) Plasma. 19. What is the size of an adult's heart? A) Two fists together. B) The size of a fist. C) The size of a ball. D) The size of an apple. Show Answer Correct Answer: B) The size of a fist. 20. The human transportation system includes the following, except..... A) Blood vessels. B) Heart. C) Blood. D) Was. Show Answer Correct Answer: D) Was. ← 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