This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 699 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 699 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which carries oxygen-rich blood away from the heart? A) Arteries. B) Veins. C) Capillaries. D) Marrow. Show Answer Correct Answer: A) Arteries. 2. Which is the external layer of blood vessels? A) Outer Tunic. B) Tunica Media. C) Inner Tunic. D) None of above. Show Answer Correct Answer: A) Outer Tunic. 3. Which bloodvessel is blocked during a heart attack? A) Aorta. B) Coronary artery. C) Coronary vein. D) Pulmonary artery. Show Answer Correct Answer: B) Coronary artery. 4. The blood vessels that carry blood toward the heart are the A) Veins. B) Capillaries. C) Arteries. D) Arterioles. Show Answer Correct Answer: A) Veins. 5. Peristalsis refers to A) One of the digestive organs. B) The action of the stomach. C) Heart rate increasing. D) Smooth muscles moving food through the digestive system. Show Answer Correct Answer: D) Smooth muscles moving food through the digestive system. 6. Blood is made up of ....., ..... blood cells, ..... blood cells and cell fragments called ..... A) Plasma/red/white/platelets. B) Arteries/veins/capillaries/atria. Show Answer Correct Answer: A) Plasma/red/white/platelets. 7. Vessel responsible for transfer of oxygen and nutrient into the muscle and waste products out of the muscles. A) Capillaries. B) Arteries. C) Blood. D) Arterioles. Show Answer Correct Answer: A) Capillaries. 8. The white blood cells A) NEED TO STUDY THIS ONE!!!!!!!!!!!. B) The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body. C) A blood cell that fights infection by destroying microscopic, disease causing organisms. D) Red blood cells that consists of a globin composed of four subunits each of which is linked to a heme molecule, that functions in oxygen transport. Show Answer Correct Answer: C) A blood cell that fights infection by destroying microscopic, disease causing organisms. 9. Anemia is caused by lack of ..... A) Iodine. B) Calcium. C) Protein. D) Iron. Show Answer Correct Answer: D) Iron. 10. The valve between the right atrium and right ventricle is called A) Aortic valve. B) Pulmonary valve. C) Tricuspid valve. D) Mitral valve. Show Answer Correct Answer: C) Tricuspid valve. 11. WBC that phagocytizes allergens and parasitic worms. A) Lymphocyte. B) Eosinophil. C) Monocyte. D) Neutrophil. Show Answer Correct Answer: B) Eosinophil. 12. Where is your blood made? A) Heart. B) Stomach. C) Bones. D) Muscles. Show Answer Correct Answer: C) Bones. 13. The two primary components of whole blood are: A) Serum and cells. B) Plasma and cells. C) Cells and dissolved proteins. D) Blood cells and cell fragments. Show Answer Correct Answer: B) Plasma and cells. 14. The main job of the circulatory system is to A) To supply cells and tissues in the body with oxygen and other nutrients. B) To supply the body with food. C) To git rid of CO2. D) None of above. Show Answer Correct Answer: A) To supply cells and tissues in the body with oxygen and other nutrients. 15. The part of our blood that helps fight infection A) Red Blood Cells. B) Plasma. C) White Blood Cells. D) Platelets. Show Answer Correct Answer: C) White Blood Cells. 16. What units do we use to measure pulse rate? A) Beats per second. B) Beats per minute. C) Beats per hour. D) None of above. Show Answer Correct Answer: B) Beats per minute. 17. What is the purpose of the valves located in veins? A) To keep the vein open for blood to flow through. B) To keep blood flowing in one direction through the vein. C) To allow blood to flow in both directions within the vein. D) To allow the blood to flow back down to the lower parts of the body. Show Answer Correct Answer: B) To keep blood flowing in one direction through the vein. 18. The substance that flows inside the human body through muscular tubes. A) Water. B) Juice. C) Blood. D) None of above. Show Answer Correct Answer: C) Blood. 19. What happens to your heart rate when you exercise? A) Your heart rate increases. B) Your heart rate decreases. C) Your heart rate stays the same. D) None of above. Show Answer Correct Answer: A) Your heart rate increases. 20. Blood that travels in the veins are rich in: A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Carbon monoxide. Show Answer Correct Answer: B) Carbon dioxide. ← 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