This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 206 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 206 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What am I? I am the inside layer of an artery or vein, or the only layer of a capillary A) Outer tunic. B) Tunica media. C) Intimate tunic. D) None of above. Show Answer Correct Answer: C) Intimate tunic. 2. Movement of blood from heart to lungs and back to the heart A) Pulmonary Circulation. B) Coronary Circulation. C) Systematic Circulatic. D) None of above. Show Answer Correct Answer: A) Pulmonary Circulation. 3. The students were asked 'to submit' their assignments by Friday. A) Finite. B) Non-finite. Show Answer Correct Answer: B) Non-finite. 4. Which of the three types of blood vessels are the smallest? A) Capillaries. B) Arteries. C) Veins. D) None of above. Show Answer Correct Answer: A) Capillaries. 5. How many times the blood flows into the heart in fish? A) Once. B) Twice. Show Answer Correct Answer: A) Once. 6. A blood vessel that carries blood back to the heart is called ..... It has a one-way valve to control blood flow. A) Artery. B) Plasma. C) Veins. D) Capillaries. Show Answer Correct Answer: C) Veins. 7. Size of your heart is about the size of A) An apple. B) Human fist. C) A chickpea. D) A football. Show Answer Correct Answer: B) Human fist. 8. Which connects arteries & veins? A) Heart. B) Capillaries. C) Arteries. D) Veins. Show Answer Correct Answer: B) Capillaries. 9. Which chamber of the heart pushes blood out to the lungs? A) Right atrium. B) Right ventricle. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: B) Right ventricle. 10. ..... carry oxygen and nutrients away from the heart to the body. A) Arteries. B) Veins. C) Heart. D) Lungs. Show Answer Correct Answer: A) Arteries. 11. Which human body system performs a function similar to that of the vascular system (xylem and Phloem) of a plant? A) Respiratory system. B) Muscular system. C) Circulatory system. D) Skeletal system. Show Answer Correct Answer: C) Circulatory system. 12. The muscles in the left ventricle are thicker than the right ventricle because..... A) The left ventricle pumps blood throughout the body. B) The left ventricle pumps blood to the lungs. C) The left ventricle receives blood from the lungs. D) The left ventricle receives blood from all over the body. Show Answer Correct Answer: A) The left ventricle pumps blood throughout the body. 13. Capillaries are A) Blood vessels that move blood away from the heart. B) A pritein that can carry oxygen and carbon dioxide. C) The force that blood exerts on the walls of the vessels. D) Microscopic blood vessels connecting larger vessels. Show Answer Correct Answer: D) Microscopic blood vessels connecting larger vessels. 14. This organ pumps blood to the body and is about the size of your fist. A) Heart. B) Stomach. C) Liver. D) Brain. Show Answer Correct Answer: A) Heart. 15. Coronary arteries:to A) Lungs. B) Heart. C) Heart muscles. D) Right atrium. Show Answer Correct Answer: C) Heart muscles. 16. The concentration of oxygen is highest in the blood flowing through the A) Superior vena cava. B) Inferior vena cava. C) Pulmonary vein. D) Pulmonary artery. Show Answer Correct Answer: C) Pulmonary vein. 17. In which of the following organisms is a circulatory system unnecessary due to the direct exchange of gases and nutrients through the body surface? A) Fish. B) Birds. C) Flatworms. D) Mammals. Show Answer Correct Answer: C) Flatworms. 18. ..... are the upper chambers of the heart. A) Platelets. B) Atriums. C) Plasma. D) Ventricles. Show Answer Correct Answer: B) Atriums. 19. The names of the bottom chambers are? A) Right and left atrium. B) Right and left ventricle. Show Answer Correct Answer: B) Right and left ventricle. 20. Inhale!!!! Your lungs are ..... air A) Taking in. B) Letting out. Show Answer Correct Answer: A) Taking in. ← 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