This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 387 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 387 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It is considered the "river of life" due to the substances it carries A) Heart. B) Blood. C) Blood vessels. D) None of above. Show Answer Correct Answer: B) Blood. 2. Blood Capillary is a A) Broad tube. B) Artery with thick wall. C) Vein with large lumen. D) Narrow tube made up of endothelium only. Show Answer Correct Answer: D) Narrow tube made up of endothelium only. 3. All of the protoplasm that surrounds the nucleus. A) Protoplasm. B) Cytoplasm. Show Answer Correct Answer: B) Cytoplasm. 4. Which formed elements are cell fragments? A) Platelets. B) Red blood cells. C) Plasma. D) White blood cells. Show Answer Correct Answer: A) Platelets. 5. The right ventricle pumps blood to the lungs A) True. B) False. Show Answer Correct Answer: A) True. 6. What is the function of a capillary? A) Carries blood away from the heart. B) Carries blood back to the heart. C) Exchanges gases between blood and body cells. D) Pumps blood throughout the body. Show Answer Correct Answer: C) Exchanges gases between blood and body cells. 7. Two hollow tubes that branch out from the trachea A) Alveoli. B) Bronchi. C) Bronchioles. D) Diaphragm. Show Answer Correct Answer: B) Bronchi. 8. The circulatory system is focused on the heart, a muscular organ that has almost the same size as your closed fist. A) True. B) False. Show Answer Correct Answer: A) True. 9. The gas exchange in humans occurs in the A) Nose. B) Trachea. C) Bronchiole tubes. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 10. The function of a capillary is to: A) Carry blood away from the heart. B) Where materials are exchanged between arteries and veins. C) Carries deoxygenated blood toward the heart. D) None of above. Show Answer Correct Answer: B) Where materials are exchanged between arteries and veins. 11. The blood travels round the body inside tubes called A) Vessels. B) Valves. Show Answer Correct Answer: A) Vessels. 12. Were does the blood go to first after the capillaries? A) Heart. B) Lungs. C) Brain. D) None of above. Show Answer Correct Answer: A) Heart. 13. Which layer of the skin contains lots of adipose tissue and connects the skin to muscle? A) Dermis. B) Epidermis. C) Keratin. D) Subcutaneous. Show Answer Correct Answer: D) Subcutaneous. 14. Coronary circulation pumps blood to the A) Body. B) Heart. C) Lungs. D) None of above. Show Answer Correct Answer: B) Heart. 15. The cardiovascular system is mainly composed of three structures namely: A) Brain, spinal cord and nerves. B) Lungs, trachea and bronchi. C) Heart, blood and blood vessels. D) Capillaries, arteries and veins. Show Answer Correct Answer: C) Heart, blood and blood vessels. 16. What do we take when we inhale? A) Hydrogen. B) Carbon dioxide. C) Calcium. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 17. It is the first heart sound and the top number of the BP A) Systolic pressure. B) Diastolic pressure. Show Answer Correct Answer: A) Systolic pressure. 18. If blood is leaving the heart on the way to the body and back to the heart, what is the correct order of blood vessels? A) Venules, veins, capillaries, arteries and arterioles. B) Arteries, arterioles, capillaries, venules and veins. C) Arterioles, venules, capillaries, veins and arteries. D) Arteries, arterioles, venules, veins and capillaries. Show Answer Correct Answer: B) Arteries, arterioles, capillaries, venules and veins. 19. Blood entering the right atrium must come from the ..... A) Pulmonary veins. B) Vena cava. C) Aorta. D) Pulmonary artery. Show Answer Correct Answer: B) Vena cava. 20. What is blood made of? A) Red and white blood cells. B) Red blood cells and plasma. C) Platelets and plasma. D) Red blood cells, white blood cells, platelets and plasma. Show Answer Correct Answer: D) Red blood cells, white blood cells, platelets and plasma. ← 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