This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 347 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 347 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Red blood cells transport ..... around our body. A) Oxygen and carbon dioxide. B) Plasma. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: A) Oxygen and carbon dioxide. 2. Tachycardia occurs when your heart rate is too ..... while bradycardia occurs when your heart rate is too ..... A) HIGH, LOW. B) LOW, HIGH. C) LOW, ERRATIC. D) HIGH, INCONSISTENT. Show Answer Correct Answer: A) HIGH, LOW. 3. The upper chamber on the left side of the heart A) Vein. B) Left atrium. C) Left ventricle. D) Artery. Show Answer Correct Answer: B) Left atrium. 4. How much exercise should you get each day to keep your heart healthy? A) 24 hrs. B) 1 hr. C) 3 hrs. D) 5 hrs. Show Answer Correct Answer: B) 1 hr. 5. The artery that carries blood from the right ventricle to the lungs A) Ventricle. B) Pulmonary artery. C) Aorta. D) Vein. Show Answer Correct Answer: B) Pulmonary artery. 6. Disorder where too few red blood cells A) Leukemia. B) Anemia. C) Cancer. D) Antigen. Show Answer Correct Answer: B) Anemia. 7. Smallest blood vessels that allow movement of molecules between the blood and our cells A) Arteries. B) Capillaries. C) Veins. D) Tendon chords. Show Answer Correct Answer: B) Capillaries. 8. The patient notices that he has been bruising easily. Labs show his blood clots very slowly. What condition is suspected? A) Sickle cell anemia. B) Leukemia. C) Thrombus. D) Hemophilia. Show Answer Correct Answer: D) Hemophilia. 9. Which segment of the ECG signifies the SA node's (atria) "firing" or electrical event? A) P Wave. B) QRS Complex. C) T Wave. D) Z margin. Show Answer Correct Answer: A) P Wave. 10. What is the hollow, muscular organ that pumps blood throughout the body? A) Stomach. B) Heart. C) Kidney. D) Large Intestine. Show Answer Correct Answer: B) Heart. 11. Which of the following makes up roughly 55% of blood? A) Red Blood Cells. B) White Blood Cells. C) Platelets. D) Plasma. Show Answer Correct Answer: D) Plasma. 12. The hollow, muscular organ that has walls made of strong muscle is called your ..... A) Liver. B) Heart. C) Kidneys. D) Lung. Show Answer Correct Answer: B) Heart. 13. Composed of a protein called heme, which binds oxygen and is an iron-containing protein in red blood cells A) Hemoglobin. B) Neutrophil. C) Erythropoiesis. D) Erythrocytes (RBCs). E) Erythrocytes (RBCs). Show Answer Correct Answer: A) Hemoglobin. 14. What is the iron-rich protein molecule that binds to oxygen in the blood? A) Hemoglobin. B) Platelets. C) Veins. D) None of above. Show Answer Correct Answer: A) Hemoglobin. 15. What is the meaning of the term oxygenated? A) Full of oxygen. B) Low in oxygen. C) Releasing oxygen. D) Needing oxygen. Show Answer Correct Answer: A) Full of oxygen. 16. Which of the following is not valve of the heart. A) Tricuspid valve. B) Bicuspid valve. C) Cuspid valve. D) None of these. Show Answer Correct Answer: C) Cuspid valve. 17. Stroke is caused by ..... A) Blood clots. B) Lack of nutrition. C) Blood clots. D) Lack of nutrition. Show Answer Correct Answer: A) Blood clots. 18. Deoxygenated blood pathway arrange steps from 1-7:inferior and superior vena cava A) 1. B) 2. C) 5. D) 4. E) 6. Show Answer Correct Answer: A) 1. 19. Combining of glucose and oxygen to produce energy. A) Circulation. B) Digestion. C) Agglutination. D) Respiration. Show Answer Correct Answer: D) Respiration. 20. How are algae able to survive? A) The algae get energy from other algae. B) The algae do not require energy to survive. C) The single cell controls all the algae's life processes. D) Other multi-celled organisms provide food for the algae. Show Answer Correct Answer: C) The single cell controls all the algae's life processes. ← 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