This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 638 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 638 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When you breathe in, the lungs ..... in order to ..... air pressure, so that air will flow in. A) Expand, decrease. B) Shrink, decrease. C) Expand, increase. D) Shrink, increase. Show Answer Correct Answer: A) Expand, decrease. 2. A buildup of cholesterol in artery walls can lead to a condition called? A) Hypertension. B) Headache. C) Atherosclerosis. D) Influenza A. Show Answer Correct Answer: C) Atherosclerosis. 3. The heart has four holes inside it that fill up with blood when it relaxes. A) True. B) False. Show Answer Correct Answer: A) True. 4. The function of blood is to: A) Keep cells plump. B) Transport substances between body cells and the external environment. C) Help maintain homeostasis. D) Transport substances between body cells and the external environment and help maintain homeostasis. Show Answer Correct Answer: D) Transport substances between body cells and the external environment and help maintain homeostasis. 5. The heart sends blood to the ..... and to ..... A) Air, the bones. B) Oxygen, the brain. C) Lungs, all other parts of the body. D) Heart, all parts of the lungs. Show Answer Correct Answer: C) Lungs, all other parts of the body. 6. T waves in an ECG indicates A) Ventricular relaxation. B) Ventricular contraction. C) Atrial contraction. D) Atrial relaxation. Show Answer Correct Answer: A) Ventricular relaxation. 7. Small vessels that receive blood from the capillaries and begin its transport back toward the heart- A) Celiac trunk. B) Arterioles. C) Venules. D) Arteries. Show Answer Correct Answer: C) Venules. 8. Contraction of the atria of the heart A) Systole. B) Diastole. Show Answer Correct Answer: B) Diastole. 9. Which of these carry blood to the heart A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 10. Which word doesn't belong to the circulatory system? A) Heart. B) Blood. C) Tendon. D) None of above. Show Answer Correct Answer: C) Tendon. 11. The left side of the heart pumps oxygenated blood around the body. A) True. B) False. Show Answer Correct Answer: A) True. 12. When you inspire the ribs move ..... A) Up and out. B) Up and in. C) Down and out. D) Down and in. Show Answer Correct Answer: A) Up and out. 13. What is another function of red blood cells besides carrying oxygen? A) They produce white blood cells. B) They carry carbon dioxide away from cells. C) They break down food into energy. D) They repair damaged tissues. Show Answer Correct Answer: B) They carry carbon dioxide away from cells. 14. Which of the following are the primary components of the blood circulatory system? A) Heart, blood vessels, and lungs. B) Heart, blood vessels, and blood. C) Heart, blood cells, and plasma. D) Blood cells, plasma, and blood vessels. Show Answer Correct Answer: B) Heart, blood vessels, and blood. 15. It means that the heart is not pumping blood around the body as efficiently as it should. It can lead to fatigue, shortness of breath, and coughing. (Circulatory) A) Lung Failure. B) Kidney Failure. C) Heart Failure. D) None of above. Show Answer Correct Answer: C) Heart Failure. 16. The type of blood vessel that is specialized for exchanging things between the blood and cells of the body A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: C) Capillaries. 17. Why do lymph nodes get swollen when you are sick? A) Your temperature is elevated. B) You have too much fluid in your body. C) Your blood pressure is too high. D) Your body is filtering out bacteria, cell debris and foreign particles. Show Answer Correct Answer: D) Your body is filtering out bacteria, cell debris and foreign particles. 18. Which of the following causes a pulse? A) The movement of the heart pumps blood into the capillaries. B) The movement of the heart pumps blood to the veins. C) The movement of the heart pumps blood to the arteries. D) The movement of the heart pumps blood to the lungs. Show Answer Correct Answer: C) The movement of the heart pumps blood to the arteries. 19. The liquid that about 55% of blood is made from this. A) Red Blood Cells. B) Platelets. C) Plasma. D) None of above. Show Answer Correct Answer: C) Plasma. 20. This gas is carried by the blood in the arteries and is used by cells in cellular respiration. A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) Hydrogen. Show Answer Correct Answer: A) Oxygen. ← 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