This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 229 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 229 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is organ X ？ A) Lung. B) Kidney. C) Stomach. D) Heart. Show Answer Correct Answer: D) Heart. 2. Which component of blood is mostly water? A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: D) Plasma. 3. Heart rate is ..... A) The number of times the heart beats in a 1 minute. B) The number of times the heart beats in 1 second. C) The same throughout the day. D) The number of times the heart beats in 10 minutes. Show Answer Correct Answer: A) The number of times the heart beats in a 1 minute. 4. What would an example of something found in plasma? A) Carbon dioxide. B) Photosynthesis. C) Glucose. D) Oxygen. Show Answer Correct Answer: A) Carbon dioxide. 5. ....is characterized by abnormally high or abnormally low heart rate. A) Heart attack. B) Cardiac arrhythmia. C) Stroke. D) None of above. Show Answer Correct Answer: B) Cardiac arrhythmia. 6. The pacemaker adjusts the heart rate to match the amount of ..... that is needed. A) Oxygen. B) Carbon dioxide. Show Answer Correct Answer: A) Oxygen. 7. What is number 2 labelling? A) Left atrium. B) Left ventricle. C) Right atrium. D) Right ventricle. Show Answer Correct Answer: D) Right ventricle. 8. Chemical digestion happens because of ..... A) Teeth. B) Peristalsis. C) Bile. D) Enzymes. Show Answer Correct Answer: D) Enzymes. 9. Some students observing a classroom device being used, noticed the below energy transformations. Electrical $\rightarrow$ Mechanical $\rightarrow$ Sound Which device were the students most likely observing? A) A triple beam balance measuring an object's mass. B) A pencil sharpener plugged into a wall outlet. C) A projector displaying a diagram on the screen. D) A working flashlight used to light up a dark corner. Show Answer Correct Answer: B) A pencil sharpener plugged into a wall outlet. 10. Needed for the clotting of blood. A) PLASMA. B) PLATELETS. C) WHITE BLOOD CELLS. D) RED BLOOD CELLS. Show Answer Correct Answer: B) PLATELETS. 11. Systematic circulation carries the blood to ..... A) The lungs. B) The body. C) The heart. D) None of above. Show Answer Correct Answer: B) The body. 12. Which is a function of the circulatory system? A) Moves blood throughout the body. B) Let's you breathe. C) Hold a person upright. D) Sends and receives info about what is happening in the body. Show Answer Correct Answer: A) Moves blood throughout the body. 13. AIDS A) Cardiovascular system. B) Lymphatic system. Show Answer Correct Answer: B) Lymphatic system. 14. Mr. Lee is really cool. A) True. B) False. Show Answer Correct Answer: A) True. 15. How are arteries and veins different? A) The arteries carry blood away from the heart while veins carry blood to the heart. B) The veins carry blood away from the heart while arteries carry blood to the heart. Show Answer Correct Answer: A) The arteries carry blood away from the heart while veins carry blood to the heart. 16. These cells are in charge of blood clots and repairing tissue where the skin is cut. A) Plasma. B) Red Blood Cells. C) White Blood Cells. D) Platelets. Show Answer Correct Answer: D) Platelets. 17. The superior and inferior vena cava ..... A) Are capillaries that return oxygen-rich blood from the body to the lung. B) Are arteries that return oxygen-poor blood from the body to the heart. C) Are large veins that return oxygen-poor blood from the body to the heart. D) Help fight infection. Show Answer Correct Answer: C) Are large veins that return oxygen-poor blood from the body to the heart. 18. Medical procedure using sonographic sound to analyze the size, shape, and movement of structures inside the heart is called A) Holter monitor. B) Electrocardiogram. C) Echocardiography. D) Computed tomography. Show Answer Correct Answer: C) Echocardiography. 19. Venules are the smallest of these (may have multiple answers) A) Arteries. B) Veins. C) Capillaries. D) Alveoli. Show Answer Correct Answer: B) Veins. 20. Chronic obstructive pulmonary disease would be abbreviated by: A) CHF. B) CAD. C) CPR. D) COPD. Show Answer Correct Answer: D) COPD. ← 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