This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 693 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 693 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In the walls of the heart, there are two thin layers that form a sandwich around a thick layer of muscle called the A) Epithelial tissue. B) Pericardium. C) Connective tissue. D) Myocardium. Show Answer Correct Answer: D) Myocardium. 2. The heart has ..... separate pumps. A) 6. B) 5. C) 2. D) 4. Show Answer Correct Answer: C) 2. 3. What is peristalsis A) Wave like contractions that move food along the digestive track. B) Muscles moving together to break down food within the stomach . Show Answer Correct Answer: A) Wave like contractions that move food along the digestive track. 4. The blood transports ..... A) Only oxygen. B) Oxygen and carbon dioxide. C) Oxygen, carbon dioxide and nutrients. D) Oxygen, carbon dioxide, nutrients and waste products. Show Answer Correct Answer: D) Oxygen, carbon dioxide, nutrients and waste products. 5. 11 A) Inferior vena cava. B) Superior vena cava. C) Aorta. D) Septum. Show Answer Correct Answer: A) Inferior vena cava. 6. The flow of blood to and from the lungs is referred to as A) Pulmonary circulation. B) Systemic circulation. C) Autonomic circulation. D) Somatic circulation. Show Answer Correct Answer: A) Pulmonary circulation. 7. The job of the ..... is to help blood to clot whenever a blood vessel gets damaged. A) Red blood cells. B) White blood cells. C) Platelets. D) Plasma. Show Answer Correct Answer: C) Platelets. 8. A person standing still for a long time without moving his legs would faint easily. This is due to a shortage of oxygen supply A) To the leg. B) To the heart. C) To the brain. D) To the lung. Show Answer Correct Answer: C) To the brain. 9. When living things battle each other for resources, it is called A) Producing. B) Recycling. C) Cooperation. D) Competition. Show Answer Correct Answer: D) Competition. 10. Which does not make up the circulatory system? A) Heart. B) Blood. C) Lungs. D) Blood vessels. Show Answer Correct Answer: C) Lungs. 11. Blood contains A) Plasma, plates, and red blood cells. B) Plasma, platelets, and white blood cells. C) Plasma, platelets, red and white blood cells. D) Plasma, red blood cells and white blood cells. Show Answer Correct Answer: C) Plasma, platelets, red and white blood cells. 12. Functions of Circulatory System: A) Protect from infection. B) Transport O2 and wastes products. C) Hemostasis. D) Provides heat. E) All of these are correct. Show Answer Correct Answer: E) All of these are correct. 13. How many lungs do humans have? A) One. B) Two. C) Three. D) None of above. Show Answer Correct Answer: B) Two. 14. Smooth layer of cells that lines the inside of the heart and is continuous with the inside of blood vessels A) Myocardium. B) Pericardium. C) Septum. D) Endocardium. Show Answer Correct Answer: D) Endocardium. 15. Organ responsible for Purification of blood is called A) The Heart. B) The Lungs. C) The kidneys. D) The Blood. Show Answer Correct Answer: B) The Lungs. 16. This collects oxygen poor blood throughout your body and carries it back to your heart. A) Arteries. B) Veins. C) Capillaries. D) Blood Vessels. Show Answer Correct Answer: B) Veins. 17. You can feel your heart beating when you feel your ..... A) Pulse. B) Breathing. C) Stomach growling. D) None of above. Show Answer Correct Answer: A) Pulse. 18. Would a person with type B blood be able to receive type AB blood from a transfusion? A) Yes, because they both have the B antigen. B) Yes, because the person has B antibodies. C) No, because the person has A antibodies. D) No, because the person has B antibodies. Show Answer Correct Answer: C) No, because the person has A antibodies. 19. What keeps blood from flowing in two directions A) Clots. B) Capillaries. C) Valves. D) Plugs. Show Answer Correct Answer: C) Valves. 20. 2 upper chambers of the heart A) Right and left ventricle. B) Right and left vascular. C) Right and left artery. D) Right and left atrium. Show Answer Correct Answer: D) Right and left atrium. ← 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