This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 670 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 670 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the role of the right side of the heart in circulation? A) Pump oxygen-rich blood to the body. B) Pump blood to the lungs. C) Connect arteries and veins. D) Prevent backflow. Show Answer Correct Answer: B) Pump blood to the lungs. 2. What is the pressure of blood against the walls of blood vessels when the heart is relaxing between beats? A) Diastolic pressure. B) Systolic pressure. Show Answer Correct Answer: A) Diastolic pressure. 3. The blood vessel connected to the left atrium is the ..... A) Vena Cava. B) Pulmonary artery. C) Pulmonary vein. D) Aorta. Show Answer Correct Answer: C) Pulmonary vein. 4. Where do the pulmonary arteries and veins travel to/from? A) The brain. B) The lungs. C) The liver. D) The eyes. Show Answer Correct Answer: B) The lungs. 5. What body system is responsible for transporting red blood cells throughout the body? A) Muscular. B) Skeletal. C) Respiratory. D) Circulatory. Show Answer Correct Answer: D) Circulatory. 6. A heart rate over 220 would be dangerous. A) True. B) False. Show Answer Correct Answer: A) True. 7. Which of the following is the correct order in which air moves through the human respiratory system when a person inhales? A) Nose, larynx, trachea, bronchi, alveoli, bronchi. B) Pharynx, nose, trachea, larynx bronchi, bronchioles, alveoli. C) Pharynx, bronchi, nose, larynx, trachea, bronchioles, alveoli. D) Nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli. Show Answer Correct Answer: D) Nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli. 8. What prevents the blood from going backward after it gets pumped by the heart? A) The septum. B) The atria. C) The ventricles. D) The valves. Show Answer Correct Answer: D) The valves. 9. Diffusion moves molecules in which direction? A) High concentration $\rightarrow$ low concentration. B) Low concentration $\rightarrow$ high concentration. C) High concentration $\rightarrow$ high concentation. D) Low concentration $\rightarrow$ low concentration. Show Answer Correct Answer: A) High concentration $\rightarrow$ low concentration. 10. The sound the heart makes A) Arteriole. B) Venule. C) Capillary. D) The black. Show Answer Correct Answer: D) The black. 11. Name the proteins on the surface of red blood cells. A) Antibodies. B) Antigens. C) Plasma. D) Collagen. Show Answer Correct Answer: B) Antigens. 12. The heart is constantly pumping and the blood flows in only one direction. A) True. B) False. Show Answer Correct Answer: A) True. 13. Type of cell that functions to stop bleeding: A) Red blood cell. B) Platelet. C) Leukocyte. D) White Blood Cell. Show Answer Correct Answer: B) Platelet. 14. The name for the circular movement of blood through the body is called A) Budding. B) Helping. C) Circulation. D) Fastening. Show Answer Correct Answer: C) Circulation. 15. Arteries travel away from the heart. A) True. B) False. Show Answer Correct Answer: A) True. 16. What term refers to an abnormally high WBC count A) Leukopenia. B) Leukoplakia. C) Leukocytosis. D) Leukocytes. Show Answer Correct Answer: C) Leukocytosis. 17. What is the main function of arteries in the circulatory system? A) Carry blood towards the heart. B) Thin walls. C) Carries blood away from the heart. D) Low pressure of blood. Show Answer Correct Answer: C) Carries blood away from the heart. 18. What is the main function of your heart? A) Carry blood around your body. B) Bring oxygen to your major organs. C) Pump blood through the circulatory system. D) Get rid of waste produced by the body. Show Answer Correct Answer: C) Pump blood through the circulatory system. 19. Capillaries are extremely thin blood vessels, which connect arteries and veins A) True. B) False. Show Answer Correct Answer: A) True. 20. Which type of vessel normally contains valves that prevent the backward flow of materials? A) Artery. B) Arteriole. C) Capillary. D) Vein. Show Answer Correct Answer: D) Vein. ← 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