This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 171 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 171 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The respiratory system takes in oxygen and gives out ..... A) Carbon dioxide. B) More oxygen. C) Air and nutrients. D) None of above. Show Answer Correct Answer: A) Carbon dioxide. 2. What is the function of platelets? A) They transport oxygen. B) They heal wounds and coagulate blood. C) They protect from infections. D) None of above. Show Answer Correct Answer: B) They heal wounds and coagulate blood. 3. Blood vessel that supplies the heart muscle A) Femoral. B) Coronary. C) Aorta. D) Carotid. Show Answer Correct Answer: B) Coronary. 4. Liquid part of blood that supports the other parts A) Platelets. B) Plasma. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: B) Plasma. 5. Where in the cell does aerobic respiration take place? A) Nucleus. B) Cytoplasm. C) Mitochondria. D) Cell membrane. Show Answer Correct Answer: C) Mitochondria. 6. The heart is enclosed by a single membrane called pericardium A) True. B) False. Show Answer Correct Answer: B) False. 7. Blood moves to the heart and goes to both lungs to drop off carbon dioxide and pick up ..... A) White blood cells. B) Oxygen. Show Answer Correct Answer: B) Oxygen. 8. During gas exchange Oxygen leaves the capillaries, enters the alveolus, then the bronchioles and is eventually breathed out. A) True. B) False. Show Answer Correct Answer: B) False. 9. The blood transports ..... and remove ..... A) Hormones-waste products. B) Hormones-ills. C) Waste products-hormones. D) Waste product-ills. Show Answer Correct Answer: A) Hormones-waste products. 10. What is the main function of the circulatory system in the human body? A) Transport nutrients and oxygen to cells. B) Remove waste products from the body. C) Regulate body temperature. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. Which of the following does NOT belong in the cirulatory group? A) Capillaries. B) Veins. C) Lungs. D) Arteries. Show Answer Correct Answer: C) Lungs. 12. What divides the heart into right and left halves? A) Plasma. B) Valves. C) Septum. D) Atrium. Show Answer Correct Answer: C) Septum. 13. Membrane surrounding the heart A) Endocardium. B) Myocardium. C) Epicardium. D) Pericardium. Show Answer Correct Answer: D) Pericardium. 14. The red color of blood is the result of hemoglobin carrying oxygen. A) True. B) False. Show Answer Correct Answer: A) True. 15. What is the muscle called that contracts and relaxes during breathing? A) Heart. B) Stomach. C) Diaphragm. D) Lung. Show Answer Correct Answer: C) Diaphragm. 16. Which side of the heart always receives deoxygenated blood? A) Right. B) Left. C) Top. D) Bottom. E) Anywhere. Show Answer Correct Answer: A) Right. 17. In 120/80 denotes..... 120 in 120/80 denotes..... A) Systolic pressure Systolic pressure. B) Diastolic pressure Diastolic pressure. C) Blood pressure. D) Normal blood pressure is normal blood pressure. Show Answer Correct Answer: A) Systolic pressure Systolic pressure. 18. Thrombin is an enzyme that converts fibrin to fibrinogen A) True. B) False. Show Answer Correct Answer: B) False. 19. What are the 4 main chambers of the heart? A) Right atrium, left atrium, aorta, pulmonary artery. B) Right atrium, left atrium, right ventricle, left ventricle. C) Left atrium, aorta, pulmonary artery, pulmonary vein. D) Right atrium, left atrium, right ventricle, aorta. Show Answer Correct Answer: B) Right atrium, left atrium, right ventricle, left ventricle. 20. ..... is the force of blood on the walls of the blood vessels. A) Pulse. B) Heart rate. C) Blood Pressure. D) Hypertension. Show Answer Correct Answer: C) Blood 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