This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 275 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 275 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the function of the inferior vena cava? A) Carry deoxygenated blood from the lower body to the right atrium. B) Carry oxygenated blood from the lower body to the right atrium. C) Carry deoxygenated blood from the upper body to the right atrium. D) Carry oxygenated blood from the upper body to the right atrium. Show Answer Correct Answer: A) Carry deoxygenated blood from the lower body to the right atrium. 2. What is the smallest unit of life? A) Atom. B) Organ. C) Tissue. D) Cell. Show Answer Correct Answer: D) Cell. 3. Leucocytes can be classified into granulocytes and agranulocytes. Which of the following is NOT a granulocyte? A) Eosinophils. B) Basophils. C) Monocytes. D) Neutrophils. Show Answer Correct Answer: C) Monocytes. 4. It's a blood vessel in the FRONTAL PART OF THE NECK A) Femoral vein. B) Femoral artery. C) Carotid artery. D) Jugular vein. E) Vena cava. Show Answer Correct Answer: D) Jugular vein. 5. COMPONENTS OF THE BLOOD:Transport oxygen. A) Red blood cells. B) Plasma. C) Platelets. D) White blood cells. Show Answer Correct Answer: A) Red blood cells. 6. Organs of the respiratory system that bring oxygen-rich air into the body and send oxygen-poor air out of the body. A) Heart. B) Muscles. C) Lungs. D) Bones. Show Answer Correct Answer: C) Lungs. 7. Which of the following structures carries deoxygenated blood? A) Right atrium. B) Aorta. C) Left atrium. D) Pulmonary vein. Show Answer Correct Answer: A) Right atrium. 8. Which component of blood makes up 1% of blood? A) White blood cells and platelets. B) All of the above. C) None of the above. D) None of above. Show Answer Correct Answer: A) White blood cells and platelets. 9. Which of the following are chambers of the heart? A) Valves. B) Atrium and ventricle. C) Arteries and veins. D) Atrium and veins. Show Answer Correct Answer: B) Atrium and ventricle. 10. What is the chemical equation for cellular respiration? A) Glucose + Oxygen $\rightarrow$ Carbon Dioxide + Water + ATP. B) Glucose + Carbon Dioxide $\rightarrow$ Oxygen + Water + ATP. C) ATP+ Oxygen $\rightarrow$ Water + Carbon Dioxide + Glucose. D) Glucose + Water $\rightarrow$ Carbon Dioxide + Oxygen + ATP. Show Answer Correct Answer: A) Glucose + Oxygen $\rightarrow$ Carbon Dioxide + Water + ATP. 11. There are valves within the heart cavity. A) True. B) False. Show Answer Correct Answer: A) True. 12. What is Circulatory System also known as? A) Heart. B) Cardiovascular. C) RBCs. D) Leukocytes. Show Answer Correct Answer: B) Cardiovascular. 13. Blood returns to the heart from the body through blood vessels called? A) Arteries. B) Veins. C) Lymphatic Vessels. D) Capillaries. Show Answer Correct Answer: B) Veins. 14. These are similar to delivery trucks? (a) A) A blood cells. B) Veins. C) Arteries. D) Heart. Show Answer Correct Answer: A) A blood cells. 15. The blood:on the way it picks up nutrients and oxygen and drops off carbon dioxide and waste products A) True. B) False. Show Answer Correct Answer: A) True. 16. Oxygenated blood flow from the lungs to the heart via ..... A) Vena Cava. B) Aorta. C) Pulmonary artery. D) Pulmonary vein. Show Answer Correct Answer: D) Pulmonary vein. 17. The replacement of lost blood. A) Plasma. B) Platelets. C) Transfusion. D) None of above. Show Answer Correct Answer: C) Transfusion. 18. Carry oxygen A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: A) Red blood cells. 19. What causes the "lub-dub, lub-dub" sound that your heart makes? A) Valves closing. B) Valves opening. C) Cardiac muscle relaxation. D) None of above. Show Answer Correct Answer: A) Valves closing. 20. Which type of blood vessel carries blood to your heart? A) Arteries. B) Capillaries. C) Veins. D) Valves. Show Answer Correct Answer: C) 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