This quiz works best with JavaScript enabled. Home > Science > Biology > Circulatory System – Quiz 331 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Circulatory System Quiz 331 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A ..... is a tube that carries blood throughout the body. A) Heart. B) Blood vessel. C) Pump. D) None of above. Show Answer Correct Answer: B) Blood vessel. 2. Which person would have stronger heart? A) Joe-high stroke volume, low heart rate. B) Bob-low stroke rate, high heart rate. C) Ms. Matthews-heartless. D) None of above. Show Answer Correct Answer: A) Joe-high stroke volume, low heart rate. 3. What is the definition of the Cardiac Cycle? A) The contraction of the atria. B) The sequence of events that occur during one complete heartbeat. C) The contraction and relaxation of the ventricles. D) The circulation of blood in the heart. Show Answer Correct Answer: B) The sequence of events that occur during one complete heartbeat. 4. Which blood vessel takes blood AWAY from the heart? A) Arteries. B) Capillaries. C) Veins. D) All of them. Show Answer Correct Answer: A) Arteries. 5. Myocardial infarctions result from: A) Damaged heart valves. B) Weakened heart muscle. C) Obstruction of blood flow to the heart muscle. D) Low blood pressure. Show Answer Correct Answer: C) Obstruction of blood flow to the heart muscle. 6. What subsatnce in the mouth conatins an enzyme that genins chemical digestion? A) Fiber. B) Mucus. C) Saliva. D) Pepsin. Show Answer Correct Answer: C) Saliva. 7. The ..... and ..... direct your heart's function A) Brain and spine. B) Brain and nervous system. C) Heart and lungs. D) None of above. Show Answer Correct Answer: B) Brain and nervous system. 8. Blood cells that fight off diseases A) Red blood cells. B) White blood cells. Show Answer Correct Answer: B) White blood cells. 9. Heart:Blood Lungs: ..... A) Carbon dioxide. B) Oxygen. C) Vessels. D) Valve. Show Answer Correct Answer: B) Oxygen. 10. In the diagram, what do the arrows represent? A) Abiotic relationships. B) The predator-prey relationship. C) The cycle. D) Transfer of energy. Show Answer Correct Answer: D) Transfer of energy. 11. Pressure in the brachial artery when the left ventricle is relaxed and filling with blood. A) Systolic Blood Pressure. B) Diastolic Blood Pressure. Show Answer Correct Answer: B) Diastolic Blood Pressure. 12. The relaxing phase of the cardiac cycle is called. A) Bradycardia. B) Diastole. C) Infarction. D) Systole. Show Answer Correct Answer: B) Diastole. 13. The heart pumps blood to different parts of the body. A) True. B) False. Show Answer Correct Answer: A) True. 14. Which of the following is the correct sequence of blood passing through the valves of the heart? A) Tricuspid > Pulmonary > Bicuspid > Aortic Semilunar Valve. B) Tricuspid > Aortic Semilunar > Bicuspid > Pulmonary Valve. C) Bicuspid > Pulmonary > Tricuspid > Aortic Semilunar Valve. D) Bicuspid > Tricuspid > Aortic Semilunar > Pulmonary Valve. Show Answer Correct Answer: A) Tricuspid > Pulmonary > Bicuspid > Aortic Semilunar Valve. 15. Which component of blood fights off infection? A) Plasma. B) Red blood cells. C) White blood cells. D) Platelets. Show Answer Correct Answer: B) Red blood cells. 16. Which of the following is not a part of blood? A) RBCs. B) WBCs. C) Platelets. D) Lymph. Show Answer Correct Answer: D) Lymph. 17. Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. A) Bronchioles. B) Lung lobes. C) Alveoli. D) Capillaries. Show Answer Correct Answer: C) Alveoli. 18. In which of the following scenarios does blood have the highest oxygen level? A) Blood enters the left atrium to left ventricle to aorta. B) Blood flows through the body by arteries and then to capillaries. C) Food, nutrients, and oxygen are delivered by diffusion. D) Blood returns to the heart through the inferior vena cava and into the right atrium. Show Answer Correct Answer: A) Blood enters the left atrium to left ventricle to aorta. 19. A woman is running in a race. Which of the following statements are true about the woman as she runs? A. Her blood circulates at a higher rate. B. Her body produces less carbon dioxide. C. Her heart beats faster. D. Her body needs more oxygen. A) A and D only. B) B and C only. C) A, C and D only. D) B, C and D only. Show Answer Correct Answer: C) A, C and D only. 20. These are modified cardiac muscle fibers; Non-contractile and pale staining. A) Gap junctions. B) Desmosomes. C) Purkinje fibers. D) Fascia adherens. Show Answer Correct Answer: C) Purkinje fibers. ← 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