This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 303 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 303 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Veins and arteries are important to the circulatory sistem. Whats is the difference between the two? A) Arteries carry blood away from the heart, Veins carry the blood to the heart. B) Arteries carry blood to the heart, Veins carry the blood away from the heart. C) The veins carry bright red blood, arteries carry dark red blood. D) None of above. Show Answer Correct Answer: A) Arteries carry blood away from the heart, Veins carry the blood to the heart. 2. The fluid that escapes from the blood capillaries and then flows in special vessels is called ..... A) Blood. B) Lymph. C) Serum. D) Plasma. Show Answer Correct Answer: B) Lymph. 3. ALLOWS BLOOD TO GO THROUGH BUT NOT COME BACK A) VALVES. B) ATRIUMS. C) ARTERIES. D) VEINS. Show Answer Correct Answer: A) VALVES. 4. The pulmonary veins carry oxygenated blood back to the ..... A) Right atrium. B) Left atrium. C) Right ventricle. D) Left ventricle. Show Answer Correct Answer: B) Left atrium. 5. Exercising causes your breathing rate and heart rate to speed up because ..... A) The muscles are releasing more oxygen into the blood, creating carbonic acid. B) The muscles are releasing more carbon dioxide into the blood, creating carbonic acid. C) There are more white blood cells in the blood during exercise. D) There are more red blood cells in the blood during exercise. Show Answer Correct Answer: B) The muscles are releasing more carbon dioxide into the blood, creating carbonic acid. 6. COMPONENTS OF THE BLOOD:Cells that defend us of illness. A) Red blood cells. B) Plasma. C) Platelets. D) White blood cells. Show Answer Correct Answer: D) White blood cells. 7. What is one function of blood plasma? A) Digesting pathogens. B) Transporting oxygen only. C) Regulating body temperature and transport digested food molecules e.g. glucose. D) Producing antibodies. Show Answer Correct Answer: C) Regulating body temperature and transport digested food molecules e.g. glucose. 8. The primary function of the small intestine is A) Store bile. B) To produce enzymes. C) To absorb nutrients. D) To get rid of wastes. Show Answer Correct Answer: C) To absorb nutrients. 9. Humans have a(n) A) Open circulatory system. B) Closed circulatory system. Show Answer Correct Answer: B) Closed circulatory system. 10. What is the purpose of the valves found in the heart? A) To keep blood from flowing backward. B) To connect the chambers of the heart. C) To keep blood pressure at the right level. D) To filter the blood. Show Answer Correct Answer: A) To keep blood from flowing backward. 11. Double circulation is necessary to ..... A) Keep oxygenated and deoxygenated blood separate. B) Supply sufficient amount of oxygen. C) To produce enough energy to maintain body temperature. D) All the above. Show Answer Correct Answer: D) All the above. 12. When our heart beats it is pumping blood in and out. A) True. B) False. Show Answer Correct Answer: A) True. 13. How many chambers of the heart does amphibians have? A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: A) 3. 14. What type of antigens can be found if someone has blood type AB? A) A. B) B. C) A and B. D) None. Show Answer Correct Answer: C) A and B. 15. The types of blood that exist are A) A, B, C and O. B) OA, AB, B and A. C) Ab, b and a. D) A, B, AB and o. Show Answer Correct Answer: D) A, B, AB and o. 16. Given the following structures:1. bronchial tubes 2. air and nose 3. trachea 4. alvioli Which of the following is the correct order that air would flow during inhalation. A) 1, 2, 3, 4. B) 2, 3, 1, 4. C) 2, 1, 3, 4. D) 4, 2, 3, 1. Show Answer Correct Answer: B) 2, 3, 1, 4. 17. What is the potential consequence of an atrial septal defect? A) Heart failure. B) Stroke. C) All of the above. D) Abnormal heartbeat. Show Answer Correct Answer: C) All of the above. 18. Cartilage is a type of cushion located at the end of tissue. A) True. B) False. Show Answer Correct Answer: B) False. 19. Hemoglobin picks up and carries both ..... A) Carbon dioxide and oxygen. B) Carbon dioxide and waste. C) Nutrients and carbon dioxide. D) None of above. Show Answer Correct Answer: A) Carbon dioxide and oxygen. 20. The maximum pressure that develops in the arteries after heart muscle contraction- A) Vasoconstriction. B) Diastolic pressure. C) Systolic pressure. D) Vasodilation. Show Answer Correct Answer: C) Systolic pressure. ← 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