This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 604 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 604 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The stage of relaxation of atria and ventricles is known as..... A) Diastole. B) Systole Systole. C) Both. D) Blood pressure. Show Answer Correct Answer: A) Diastole. 2. 11) ..... are cold-blooded vertebrates. Most are covered with scales and a slimy coating that helps water flow past them. They live in water and use gills to get the oxygen they need from water. A) Birds. B) Fish. C) Reptiles. D) Amphibians. Show Answer Correct Answer: B) Fish. 3. Match each section of the respiratory system to its characteristics or definition Pharynx A) Flap of skin to cover when you swallow. B) Pushes air through the voice box. C) Moves air down ( Tube in back of the mouth). D) Air enters and tissues moisten the air. Show Answer Correct Answer: C) Moves air down ( Tube in back of the mouth). 4. What is mechanical digestion A) Acid and enzymes breaking down food. B) Physically breaking food into smaller pieces increasing the surface area of the food. C) The chewing motion of breaking down food. D) Chemical reaction using enzymes to break down polymer into monomers. Show Answer Correct Answer: B) Physically breaking food into smaller pieces increasing the surface area of the food. 5. The circulatory system works with which system to provide our body with nutrients? A) Nervous. B) Respiratory. C) Digestive. D) None of above. Show Answer Correct Answer: C) Digestive. 6. Of oxygen b. A) Pulmonary artery. B) Left atrium. C) Right atrium. D) Mitral valve/bicuspid. E) Aortic valve. Show Answer Correct Answer: A) Pulmonary artery. 7. Blood is low in oxygen in the pulmonary veins. A) True. B) False. Show Answer Correct Answer: B) False. 8. -The walls of veins are thinner than artery walls. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 9. Noise caused by the ventricular contraction A) Lub. B) Dub. C) Korotkoff Noise. D) None of above. Show Answer Correct Answer: A) Lub. 10. The ..... carry blood back to the heart. A) Veins. B) Carbon Dioxide. C) Arteries. D) Capillaries. Show Answer Correct Answer: A) Veins. 11. The role of platelets in the bloodstream A) Clotting. B) Fighting bacteria, viruses, etc. C) Carrying O2. D) Carrying CO2. Show Answer Correct Answer: A) Clotting. 12. What circulatory disorder could be diagnosed with an electrocardiogram? A) Anemia. B) Embolism. C) Fibrillation. D) Hypertension. Show Answer Correct Answer: C) Fibrillation. 13. Blood vessels that connect arteries to veins. A) Capillaries. B) Lymph nodes. C) Papilla. D) Ducts. Show Answer Correct Answer: A) Capillaries. 14. Circulatory System is like what organelle in an animal cell? A) Mitochondria. B) Cytoplasm. C) Nucleus. D) Vacuoles. Show Answer Correct Answer: B) Cytoplasm. 15. As blood begins tu circulate; it leaves the ..... from the left ventricle and goes into the aorta. A) Lungs. B) Heart. C) Body. D) None of above. Show Answer Correct Answer: B) Heart. 16. The athlete sustained an open wound while on the practice field. A couple of days later the injury appeared red, swollen, and was warm to the touch. The injury resulted in which development? A) Agglutination. B) Hemolysis. C) Phagocytosis. D) Inflammation. Show Answer Correct Answer: D) Inflammation. 17. The main function of white blood cells is ..... A) Defend our body. B) Transport water for the body. C) Transport oxygen for the body. D) Transport carbon dioxide for the body. Show Answer Correct Answer: A) Defend our body. 18. Which blood part attacks germs and pathogens? A) RBC. B) Plasma. C) Platelets. D) WBC. Show Answer Correct Answer: D) WBC. 19. ' ..... ' comes in from the stomata A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Hydrogen. Show Answer Correct Answer: A) Carbon dioxide. 20. Narrow thick type of veins A) Arteries. B) Capillaries. C) Venules. D) All of the above. Show Answer Correct Answer: A) Arteries. ← 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