This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 673 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 673 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This structure separates the left and right side of the heart. A) Valves. B) Aorta. C) Septum. D) Veins. Show Answer Correct Answer: C) Septum. 2. What is the organ that controls blood circulation? A) Liver. B) Lungs. C) Spleen. D) Heart. Show Answer Correct Answer: D) Heart. 3. Refers to the frequency of the cardiac cycle A) Cardiac Cycle. B) Heart Rate. C) Stroke Volume. D) Cardiac Output. Show Answer Correct Answer: B) Heart Rate. 4. What do red blood cells return from the tissues back to the lungs? A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Methane. Show Answer Correct Answer: B) Carbon dioxide. 5. Blood return to your hear in ..... A) Arteries. B) Capillaries. C) Vessels. D) Veins. Show Answer Correct Answer: D) Veins. 6. Deoxygenated blood from the body parts enter the heart through: A) Superior and Inferior Vena Cava. B) Hepatic Vein. C) Renal vein. D) Pulmonary vein. Show Answer Correct Answer: A) Superior and Inferior Vena Cava. 7. What chamber of the heart pumps blood to the right ventricle? A) Left Atrium. B) Left Ventricle. C) Right Atrium. D) Right Ventricle. Show Answer Correct Answer: C) Right Atrium. 8. These are one cell thick A) Arteries. B) Capillaries. C) Veins. D) None of above. Show Answer Correct Answer: B) Capillaries. 9. Blood cells are first formed in the A) Muscles. B) Heart. C) Capillaries. D) Bone marrow. Show Answer Correct Answer: D) Bone marrow. 10. Recall what deoxygenated blood is. A) Blood that is grey is apperance. B) Blood is low in oxygen. C) Blood high in oxygen. D) Blood that is green in appearance. Show Answer Correct Answer: B) Blood is low in oxygen. 11. The heart is the main organ in the ..... system A) Respiratory. B) Endocrine. C) Circulatory. D) Nervous. Show Answer Correct Answer: C) Circulatory. 12. The Red Blood cells are produced in the A) Pancreas. B) Heart. C) Muscles. D) Bone Marrow. Show Answer Correct Answer: D) Bone Marrow. 13. This type of circulation is when blood travels to the kidneys for filtration. A) Pulmonary Circulation. B) Renal Circulation. C) Coronary Circulation. D) Hepatic Portal Circulation. Show Answer Correct Answer: B) Renal Circulation. 14. The ..... valve allows blood to flow from the right ventricle to the lungs. A) Tricuspid Valve. B) Pulmonary Valve. C) Mitral Valve. D) Aortic Valve. Show Answer Correct Answer: B) Pulmonary Valve. 15. Substance found inside some long bones that makes blood cells. A) Cartilage. B) Marrow. C) Ligament. D) Spongy bone. Show Answer Correct Answer: B) Marrow. 16. The ..... returns blood from the upper body. A) Inferior vena cava. B) Aorta. C) Vena cava. D) Superior vena cava. Show Answer Correct Answer: D) Superior vena cava. 17. Deoxygenated blood enters the heart here. A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: A) Right atrium. 18. Peristalsis happens in the stomach AND the esophagus. A) True. B) False. Show Answer Correct Answer: A) True. 19. Serves as a transport medium for glucose, lipids, amino acids, hormones, metabolic end products, carbon dioxide and oxygen A) Plasma. B) Water. C) Plasma proteins. D) Ions (electrolytes). E) Ions (electrolytes). Show Answer Correct Answer: A) Plasma. 20. This separates the Right and Left ventricle-Prevents oxygenated blood from mixing with deoxygenated blood A) Interatrial Septum. B) Tricuspid Valve. C) Interventricular septum. D) Mitral Valve. Show Answer Correct Answer: C) Interventricular 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