This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 291 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 291 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is surface area? A) The measure of the amount of space inside of a solid figure. B) The sum of all the areas of all the shapes that cover the object. Show Answer Correct Answer: B) The sum of all the areas of all the shapes that cover the object. 2. True or False:The circulatory system fights infection. A) True. B) False. Show Answer Correct Answer: A) True. 3. Which of the following is NOT a characteristic or function of an artery? A) Thick walls. B) Wider lumen. C) Carry blood away from the heart. D) Carry blood with high pressure. Show Answer Correct Answer: B) Wider lumen. 4. -Thin and muscular wall-Have valve-Large lumen A) Artery. B) Capillary. C) Vein. D) None of above. Show Answer Correct Answer: C) Vein. 5. What is a vein? A) It is a blood vessel that carries blood away from the heart. B) It is a blood vessel that carries blood back to the heart. Show Answer Correct Answer: B) It is a blood vessel that carries blood back to the heart. 6. Blood is delivered back to the heart from the body by way of this largest vein? A) Vein. B) Vena cava. C) Artery. D) Aorta. Show Answer Correct Answer: B) Vena cava. 7. This is known as the heart's natural pacemaker: A) Bundle of His. B) Bundle branches. C) Sinoatrial Node. D) Atrioventricular Node. Show Answer Correct Answer: C) Sinoatrial Node. 8. When the heart muscle is relaxed it is said to be in A) Myocardium. B) Diastole. C) Systole. D) Cardiac arrest. Show Answer Correct Answer: B) Diastole. 9. Open type of circulation is seen in ..... Open type of circulation is seen in the following organisms. A) Annelids. B) Echinoderms are echinoderm organisms. C) Arthropods Arthropods. D) All the above. Show Answer Correct Answer: C) Arthropods Arthropods. 10. When you exercise, what gas does your body need more of? A) Blood. B) Carbon dioxide. C) Hydrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 11. Part of the blood that fights of diseases A) Red blood cells. B) White blood cells. C) Plasma. D) Platelets. Show Answer Correct Answer: B) White blood cells. 12. During one full circuit of the body, blood passes through the heart ..... A) Once. B) Twice. C) Thrice. D) Four times. Show Answer Correct Answer: B) Twice. 13. Which system do I use when I dance? A) Muscular. B) Skeletal. C) Respiratory. D) All of them!. Show Answer Correct Answer: D) All of them!. 14. Which part of the circulatory system is the most complex? A) White Blood Cells. B) Red Blood Cells. C) Heart. D) Blood. Show Answer Correct Answer: C) Heart. 15. Your heart beats slower when you run. A) True. B) False. Show Answer Correct Answer: B) False. 16. In which Chamber of the human heart the blood is a low in oxygen A) Right atrium. B) Right ventricle. C) Left atrium. D) Both right atrium and right ventricle. Show Answer Correct Answer: D) Both right atrium and right ventricle. 17. A large vein carrying deoxygenated blood into the heart A) Vena cava. B) Aorta. C) Alveolus. D) Hemoglobin. Show Answer Correct Answer: A) Vena cava. 18. Which part of the heart pushes oxygen-rich blood through the rest of the body? A) Left side. B) Right side. C) Top part. D) Bottom part. Show Answer Correct Answer: A) Left side. 19. Carries blood from the lower body to the right atrium A) Inferior vena cava. B) Superior vena cava. C) Four pulmonary veins. D) Aorta. Show Answer Correct Answer: A) Inferior vena cava. 20. Which of the following muscles typically operate under voluntary control? A) Cardiac muscle. B) Skeletal muscles. C) Smooth muscles. D) None of above. Show Answer Correct Answer: B) Skeletal muscles. ← 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