This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 69 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 69 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which artery transfer deoxygenated blood A) Aorta. B) Pulmonary vein. C) Pulmonary artery. D) Vena cava. Show Answer Correct Answer: C) Pulmonary artery. 2. What is the role of the valves in the heart? A) Pump blood. B) Carry nutrients. C) Control blood flow direction. D) Produce hormones. Show Answer Correct Answer: C) Control blood flow direction. 3. The type of blood vessels that have one-way valves preventing the backflow of blood. A) Capillaries. B) Arteries. C) Veins. D) Arterioles. Show Answer Correct Answer: C) Veins. 4. Which blood vessel take blood to the heart. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 5. Thymus gland A) Lymphocytes types. B) T-cells types. Show Answer Correct Answer: B) T-cells types. 6. When a neuron is not engaged in an impulse. A) Resting potential. B) Action potential. C) Neural potential. D) Synaptic potential. Show Answer Correct Answer: A) Resting potential. 7. These blood vessels have the thickest wall and carry blood moving at high pressure. A) Veins. B) Arteries. C) Capillaries. D) None of the above. Show Answer Correct Answer: B) Arteries. 8. Which of the following blood vessels contain deoxygenated blood? A) Arteries. B) Veins. C) Capillaries. D) Aorta. Show Answer Correct Answer: B) Veins. 9. Platelets are also called A) Erythrocytes. B) Thrombocytes. C) Leukocytes. D) None of the above. Show Answer Correct Answer: B) Thrombocytes. 10. An animal's color or pattern that helps it blend into its surroundings A) Environment. B) Mimicry. C) Camouflage. D) Habitat. Show Answer Correct Answer: C) Camouflage. 11. The heart is an organ that pumps ..... to the lungs and the whole body. A) Nutrients. B) Oxygen. C) Carbon dioxide. D) Blood. Show Answer Correct Answer: D) Blood. 12. Located on the surface of the red blood cells which determine blood type A) Antigens. B) Agglutination. C) Transfusion. D) Rh grouping system. E) Agglutination. Show Answer Correct Answer: A) Antigens. 13. You will have lower pulse rate when you are jogging but higher pulse rate when you are running. A) True. B) False. C) Both jogging and running will give same pulse rate. D) None of above. Show Answer Correct Answer: A) True. 14. Cohesion is ..... A) Molecules sticking together. B) Molecules sticking together with other molecules. Show Answer Correct Answer: A) Molecules sticking together. 15. A stroke is best defined as ..... A) The thickening of the walls of the arteries in the body. B) A blockage preventing or interrupting the flow of blood to the brain. C) A leak in the septum between the chambers of the heart. D) The irregular contraction of the heart muscle. Show Answer Correct Answer: B) A blockage preventing or interrupting the flow of blood to the brain. 16. Blood found in the pulmonary vein would be A) Red (oxygenated). B) Blue (deoxygenated). C) Red (deoxygenated). D) Blue (oxygenated). Show Answer Correct Answer: A) Red (oxygenated). 17. What connects bones and muscles together? A) Tendons. B) Ligaments. C) Glue. D) Cartilage. Show Answer Correct Answer: A) Tendons. 18. The blood type which is known as the universal donor. A) AB-. B) AB+. C) O-. D) O+. Show Answer Correct Answer: C) O-. 19. Which option best describes the main function of the pulmonary circulatory system? A) To supply the organs of the body with oxygenated blood. B) To remove solid waste from the blood. C) To collect oxygen and remove carbon dioxide from the blood. D) To feed the heart itself with oxygenated blood. Show Answer Correct Answer: C) To collect oxygen and remove carbon dioxide from the blood. 20. The blood vessels that carry blood back to the heart are called A) Arteries. B) Veins. Show Answer Correct Answer: B) Veins. ← 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