This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 4 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Superior vena cava-right atrium-Tricuspid valve-right ventricle-Pulmonary valve-pulmonary artery-lungs-Pulmonary veins-left atrium-mitral valve-?-aorta-rest of body A) LEFT VENTRICLE. B) LEFT ATRIUM. C) RIGHT VENTRICLE. D) RIGHT ATRIUM. Show Answer Correct Answer: A) LEFT VENTRICLE. 2. Gaseous exchange happens because of ..... A) Osmosis. B) Respiration. C) Diffusion. D) Semi-permeable membranes. Show Answer Correct Answer: C) Diffusion. 3. The ..... node is the pacemaker of the heart that is located at the top of the right atrium and establishes the heart rate. A) Atrioventricular (AV). B) Sinoatrial (SA). C) Bundle branches. D) Purkinje fibers. E) Bundle of His. Show Answer Correct Answer: B) Sinoatrial (SA). 4. Which of the following is carried by the heart to the all organs of the body through arteries, capillaries and arterioles? A) Cytoplasm. B) Blood. C) Bone marrow. D) Fluid. Show Answer Correct Answer: B) Blood. 5. Which of the following carries blood TO the lungs? A) Pulmonary veins. B) Pulmonary arteries. C) Aorta. D) Superior vena cava. Show Answer Correct Answer: B) Pulmonary arteries. 6. Which of the following would NOT help reduce the risk of heart disease? A) Eat a balanced diet. B) Exercise regularly. C) Watch a lot of Netflix. D) Do not smoke. Show Answer Correct Answer: C) Watch a lot of Netflix. 7. In the pulmonary circuit the blood leaves the lungs in the A) Pulmonary veins. B) Pulmonary arteries. C) Aorta. D) Vena cava. Show Answer Correct Answer: A) Pulmonary veins. 8. Which side of the heart pumps blood rich in oxygen to the whole body? A) Right side. B) Left side. C) Both sides. D) None of above. Show Answer Correct Answer: B) Left side. 9. Pushes blood out of heart A) Diastole. B) Systole. Show Answer Correct Answer: B) Systole. 10. Inferior chambers of the heart A) Ventricles. B) Veins. C) Chordae tendineae. D) Venules. Show Answer Correct Answer: A) Ventricles. 11. Blood Group O is an universal ..... ? A) To give. B) Acceptor. Show Answer Correct Answer: A) To give. 12. Transports air, food and water A) Pharynx (throat). B) Blood vessels. C) Intestines. D) None of above. Show Answer Correct Answer: A) Pharynx (throat). 13. Arteries are? A) Capillaries. B) Vein. C) Arteries. D) Lymphatic ducts. Show Answer Correct Answer: C) Arteries. 14. What is the scientific name for platelets? A) Erythrocytes. B) Thrombocytes. C) Leukocytes. D) Plateocytes. Show Answer Correct Answer: B) Thrombocytes. 15. The circulatory system works together with the ..... to deliver blood to the body's tissues. A) Lungs. B) Heart. C) Mouth. D) Brain. Show Answer Correct Answer: B) Heart. 16. Decreasing the radius of an artery would have what effect? A) A decrease in red blood cell size. B) Increasing resistance to blood flow. C) Increasing blood oxygen levels. D) Decrease in blood viscosity. Show Answer Correct Answer: B) Increasing resistance to blood flow. 17. Bring blood back to your heart. A) Arteries. B) Veins. C) Capillaries. D) None of above. Show Answer Correct Answer: B) Veins. 18. Where does blood first enter the heart? A) Left atrium. B) Right ventricle. C) Left ventricle. D) Right atrium. Show Answer Correct Answer: D) Right atrium. 19. The 2 atriums in the heart pump blood to what part of the body? A) Ventricles. B) Aorta. C) Lower body. D) Upper body. Show Answer Correct Answer: A) Ventricles. 20. How many gallons of blood is in the human body? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. ← PreviousNext →Related QuizzesScience QuizzesCirculatory System Quiz 1Circulatory System Quiz 2Circulatory System Quiz 3Circulatory System Quiz 5Circulatory System Quiz 6Circulatory System Quiz 7Circulatory System Quiz 8Circulatory System Quiz 9Circulatory System Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books