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Respiratory System Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following is true of surface tension in the respiratory system?

Question 2 2. Which molecule decreases surface tension and thus makes ventilation possible?

Question 3 3. Which of the following is part of the lower respiratory system?

Question 4 4. What are some of the benefits of the conducting zone?

Question 5 5. Tom's left lung is poorly ventilated, decreasing the partial pressure of oxygen to 80 mmHg. What would be the partial pressure of oxygen in the blood as it leaves Tom's left lung?

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Question 6 6. Consider the following mixture of gases: 20% oxygen, 40% carbon dioxide, and 40% nitrogen. If the total pressure is 1000 mmHg, then what is the partial pressure of oxygen?

Question 7 7. Which of the following correctly represents the formula for the maximum volume of air that our lungs can hold?

Question 8 8. How does a spirometer perform a pulmonary function test?

Question 9 9. What is the pleural membrane that lines the inside of the chest wall and extends over the diaphragm called?

Question 10 10. What is the space between the outside of the lungs and the inside of the chest wall called?

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Question 11 11. Identify the molecule to which oxygen binds within red blood cells.

Question 12 12. How many oxygen molecules can each molecule of hemoglobin bind?

Question 13 13. Why do we have millions of alveoli in each lung?

Question 14 14. Which of the following does NOT contribute to the efficiency of gas exchange?

Question 15 15. Which of the following is NOT true concerning ventilation?

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Question 16 16. Which of the following events occurs first during inspiration?

Question 17 17. Consider a person undergoing strenuous exercise. Which of the following would NOT be true for this person?

Question 18 18. What is the molecule that transports oxygen from our lungs to our tissues?

Question 19 19. Which of the following terms is used to express how oxygen binds hemoglobin as it passes through the lungs?

Question 20 20. The increased affinity of hemoglobin for oxygen is caused by which of the following?

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Question 21 21. Which of the following best describes external respiration?

Question 22 22. Which of the following is the best description of blood leaving the metabolizing tissues and returning to the lungs?

Question 23 23. What is the integration center for the homeostatic regulation of ventilation?

Question 24 24. Consider a person with brain damage to the medulla oblongata. Which of the following would likely result?

Question 25 25. Through the same reaction that forms bicarbonate, something else is produced. What is it and how is it utilized?

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Question 26 26. What happens with the bicarbonate when it is transported to the lungs so that carbon dioxide may be expired?

Question 27 27. Which of the following gestation periods is the shortest while still allowing the child to breathe on their own?

Question 28 28. What is the difference between the conducting zone and the respiratory zone?

Question 29 29. Which of the following is NOT a practical application of Henry's Law?

Question 30 30. Amelia was recently diagnosed with severe scoliosis. She was told by her physician that this disease will eventually result in stiffness of the chest wall or stiffness in the lungs themselves, which will result in difficulty with lung expansion. This is an example of _____.

Respiratory System Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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