This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 367 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 367 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Identify the type of blood vessel described:A blood vessel that has very thin walls, only one cell thick and is where gas exchange occurs. A) Vein. B) Artery. C) Capillary. D) None of above. Show Answer Correct Answer: C) Capillary. 2. Diffusion is the movement of particles from an area of ..... concentration to an area of ..... concentration A) High, Low. B) Low, High. C) Low, Low. D) High, High. Show Answer Correct Answer: A) High, Low. 3. What are valves? A) Thin tissue that flows blood to the heart. B) Strong, thin flaps of tissue that keeps blood flowing in the right direction. C) Flimsy tissue that removes bad blood. D) None of above. Show Answer Correct Answer: B) Strong, thin flaps of tissue that keeps blood flowing in the right direction. 4. Mammals have a ..... A) Single circulatory system. B) Double circulatory system. Show Answer Correct Answer: B) Double circulatory system. 5. Oxygenated blood nourishing the myocardium comes from vessels that branch off the aorta called A) Pulmonary arteries. B) Pulmonary veins. C) Coronary arteries. D) Vena cava. Show Answer Correct Answer: C) Coronary arteries. 6. Which one correctly describes a vein? A) Low blood pressure, large lumen, valves present. B) Low blood pressure, small lumen, valves present. C) Low blood pressure, small lumen, valves absent. D) High blood pressure, large lumen, valves absent. Show Answer Correct Answer: A) Low blood pressure, large lumen, valves present. 7. Which blood cells carry oxygen throughout the body? A) Red. B) White. C) Plasma. D) Platelets. Show Answer Correct Answer: A) Red. 8. What is the role of the lymphatic vessels in the circulatory system? A) They carry oxygen to the tissues. B) They take excess fluid back to the circulation. C) They produce blood cells. D) They transport hormones. Show Answer Correct Answer: B) They take excess fluid back to the circulation. 9. This element of the blood help destroy disease germs that enter the body A) Plasma. B) Red blood cells. C) White blood cells. D) Platelets. Show Answer Correct Answer: C) White blood cells. 10. What does blood transport? A) Nutrients. B) Oxygen. C) Carbon Dioxide. D) Nutrients, oxygen and carbon dioxide. Show Answer Correct Answer: D) Nutrients, oxygen and carbon dioxide. 11. Large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body A) Aorta. B) Artery. C) Atrium. D) Vena cava. Show Answer Correct Answer: A) Aorta. 12. The bottom chambers are called ..... A) Valves. B) Ventricles. C) Atrium. D) Aorta. Show Answer Correct Answer: B) Ventricles. 13. Which of the following is NOT a function of the skeletal system? A) Protects internal organs. B) Gives shape and support to your body. C) Gives a surface for muscle to attach. D) Digesting food. Show Answer Correct Answer: D) Digesting food. 14. The mitochondria is responsible for ..... A) Photosynthesis. B) Anaerobic respiration. C) Aerobic respiration. D) Fermentation. Show Answer Correct Answer: C) Aerobic respiration. 15. Which heart structure is located between the right upper and lower chambers A) Tricuspid valve. B) Left ventricle and right ventricle. C) Bicuspid valve. D) Left atrium and right atrium. Show Answer Correct Answer: A) Tricuspid valve. 16. Returns blood to the heart from the lower body. A) Inferior Vena Cava. B) Superior vena cava. C) Carotid Artery. D) None of above. Show Answer Correct Answer: A) Inferior Vena Cava. 17. What is the name of the organ that pumps blood around the body? A) Heart. B) Lungs. C) Kidney. D) Stomach. Show Answer Correct Answer: A) Heart. 18. (circulatory system) During heart bypass or arterial grafting surgery, he or she uses a special technique to stop the heart so that the surgeon can make the repair. A) Clinical Cardiac Perfusionist. B) Phlebotomist. C) Cardiovascular Surgeon. D) None of above. Show Answer Correct Answer: A) Clinical Cardiac Perfusionist. 19. The general pathway of blood in the body is A) Heart/lungs/body/heart. B) Lungs/heart/lungs/body. C) Heart/lungs/heart/body. D) Body/lungs/heart/body. Show Answer Correct Answer: C) Heart/lungs/heart/body. 20. What occurs at the capillaries and alveoli? A) Blood clotting. B) Oxygen production. C) Gas exchange. D) Muscle contraction. Show Answer Correct Answer: C) Gas exchange. ← 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