This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 589 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 589 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... are tiny blood cells that help your body form clots to stop bleeding. A) Erythrocytes. B) Leukocytes. C) Thrombocytes. D) Lymphocytes. Show Answer Correct Answer: C) Thrombocytes. 2. Arteries have ..... walls to sustain the sudden bursts of blood from the heart. A) Thick. B) Thin. C) Small. D) None of above. Show Answer Correct Answer: A) Thick. 3. When an athlete runs, why does their heart beat faster? A) There is an increase in demand of oxygen in the body. B) There is a decrease in demand of oxygen in the body. C) The heart needs to beat faster to decrease the amount of oxygen in the body. D) The heart needs to beat faster to increase the amount of carbon dioxide in the body. Show Answer Correct Answer: A) There is an increase in demand of oxygen in the body. 4. Which section of the heart is oxygenated? A) Right. B) Left. C) Atria. D) Ventricles. Show Answer Correct Answer: B) Left. 5. Red blood cells clumping together in the presence of an antibody is called A) Anemia. B) Respiration. C) Circulation. D) Agglutination. Show Answer Correct Answer: D) Agglutination. 6. Which of the following parts is responsible for gas exchange? A) Alveoli. B) Bronchioles. C) Larynx. D) Nasal cavity. Show Answer Correct Answer: D) Nasal cavity. 7. Where are the atria located in the heart? A) On the bottom. B) On the left side. C) On the right side. D) On the top. Show Answer Correct Answer: D) On the top. 8. When the bronchi and bronchioles are inflamed and full of mucus, this is known as: A) Bronchitis. B) Emphysema. C) Asthma. D) Pneumonia. Show Answer Correct Answer: A) Bronchitis. 9. What recycles, store blood cells, produce, and store lymphocytes? A) Tonsils. B) Capillaries. C) Spleen. D) Appendix. Show Answer Correct Answer: C) Spleen. 10. Special proteins produced by the body to attack foreign invaders. A) Antibodies. B) Antigen. Show Answer Correct Answer: A) Antibodies. 11. A muscular organ that pumps blood throughout the body A) Arteries. B) Heart. C) Aorta. D) Blood. Show Answer Correct Answer: B) Heart. 12. Which pushes blood away from the heart? A) Atriums. B) Artery. C) Ventricles. D) Veins. Show Answer Correct Answer: C) Ventricles. 13. The wall of the left ventricle is thicker because it ..... A) Pumps blood to the lungs. B) Pumps blood to the upper body. C) Pumps blood to the all parts of the body. D) Pumps blood into the right atrium. Show Answer Correct Answer: C) Pumps blood to the all parts of the body. 14. The heart is made of ..... muscle. A) Cardiac. B) Epithelial. C) Connective. D) Smooth. Show Answer Correct Answer: A) Cardiac. 15. What gas is a waste product carried by the blood? A) Oxygen (O2). B) Nutrients. C) Water (H2O). D) Carbon Dioxide (CO2). Show Answer Correct Answer: D) Carbon Dioxide (CO2). 16. Cardiac muscle is only found where? A) Lungs. B) Heart. C) Kidney's. D) Liver. Show Answer Correct Answer: B) Heart. 17. Blood that is rich in oxygen leaves the heart through the blood vessel known as the? A) Aorta. B) Vein. C) Capillary. D) Superior Vena Cava. Show Answer Correct Answer: A) Aorta. 18. What system consists of the blood, heart, and blood vessels? A) Respiratory System. B) Digestive System. C) Lymphatic System. D) Circulatory System. Show Answer Correct Answer: D) Circulatory System. 19. Which blood vessel is responsible for carrying oxygenated blood from the lungs to the heart? A) Pulmonary Artery. B) Pulmonary Vein. C) Aorta. D) Vena Cava. Show Answer Correct Answer: B) Pulmonary Vein. 20. Tissue separating the oxygenated and deoxygenated blood A) Apex. B) Atria. C) Ventricle. D) Septum. Show Answer Correct Answer: D) Septum. ← 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