This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 120 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 120 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The flow of blood to and from the tissues of the heart is called ..... A) Coronary circulation. B) Pulmonary circulation. C) Systemic circulation. D) High blood pressure. Show Answer Correct Answer: A) Coronary circulation. 2. What does your body need from the air around you? A) Nitrogen. B) Oxygen. C) Carbon Dioxide. D) Argon. Show Answer Correct Answer: B) Oxygen. 3. Which blood vessel carries deoxygenated blood TO the heart and lungs? A) Arteries. B) Capillaries. C) Plasma. D) Veins. Show Answer Correct Answer: D) Veins. 4. What are the lungs getting rid of when you exhale? A) Air. B) Oxygen. C) Carbon Dioxide. D) Nitrogen. Show Answer Correct Answer: C) Carbon Dioxide. 5. What is circulation A) Movement of air through the body. B) Movement of blood through the body. C) Movement of oil through the body. D) Movement of carbon dioxide through the body. Show Answer Correct Answer: B) Movement of blood through the body. 6. Which example best shows structures that make up the digestive system in the human body? A) Heart, blood, vessels. B) Nose, trachea, lungs. C) Brain, spinal cord, nerves. D) Esophagus, stomach, intestines. Show Answer Correct Answer: D) Esophagus, stomach, intestines. 7. When Sati opened her lunch box her mouth started watering on seeing the food. Which ORGAN SYSTEM is working here in her body? A) Mouth. B) Tongue. C) Respiratory system. D) Digestive system. Show Answer Correct Answer: D) Digestive system. 8. Cell fragments that clot blood are called ..... A) Platelets. B) Plasma. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: A) Platelets. 9. What do we call the molecules on the surface of blood cells that cause blood types? A) Antibodies. B) Antigens. C) Blood markers. D) Triangles. Show Answer Correct Answer: B) Antigens. 10. These tubes that carry the blood are called ..... A) Heart. B) Blood vessels. C) Lungs. D) Trachea. Show Answer Correct Answer: B) Blood vessels. 11. What enzyme breaks down Carbohydrates A) Protease. B) Carbohydrase. C) Lipase. D) Amylase. Show Answer Correct Answer: B) Carbohydrase. 12. What is the specific transportation system in complex organism? A) Blood circulatory system. B) Transport system. C) Respiration system. D) Transpiration system. Show Answer Correct Answer: A) Blood circulatory system. 13. What is the main function of the Respiratory System? A) Blood transports nutrients and gases through the body. B) Exchanges gases between the body and the environment. C) Breaks down food to provide energy. D) Removes solid, liquid and gas waste from the body. Show Answer Correct Answer: B) Exchanges gases between the body and the environment. 14. The main function of leukocytes is to: A) Carry oxygen. B) Fight infection. C) Carry carbon dioxide. D) Clot and heal wounds. Show Answer Correct Answer: B) Fight infection. 15. The real work of the heart contraction is done by which layer? A) Epicardium. B) Pericardium. C) Endocardium. D) Myocardium. Show Answer Correct Answer: D) Myocardium. 16. What type of cell fights of pathogens or foreign objects in the body? A) Red Blood Cell. B) White Blood Cell. C) Neurons. D) Thrombocytes. Show Answer Correct Answer: B) White Blood Cell. 17. Fibrin is produced when the blood components called ..... start a chain reaction that produces a blood clot. A) Red Blood Cells. B) Platelets. C) White Blood Cells. D) Hemoglobin. Show Answer Correct Answer: B) Platelets. 18. Which of the following statement is NOT TRUE about cardiorespiratory responses during prolonged exercise? A) Increase cardiac output. B) Increase heart rate. C) Reduce stroke volume. D) Maintain cardiac output. Show Answer Correct Answer: A) Increase cardiac output. 19. What type of blood do the arteries USUALLY carry? A) Oxygenated Blood. B) Deoxygenated Blood. Show Answer Correct Answer: A) Oxygenated Blood. 20. What is another name for the circulatory system? A) Lymphatic system. B) Excretory system. C) Endocrine system. D) Cardiovascular system. Show Answer Correct Answer: D) Cardiovascular system. ← 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