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Respiratory System: Help and Review 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!

Page 1

Question 1 1. Which of the following events occurs first during inspiration?

Question 2 2. Why does air move out of the lungs during expiration?

Question 3 3. How many oxygen molecules can each molecule of hemoglobin bind?

Question 4 4. Which structure provides support and flexibility for the trachea?

Question 5 5. Which of the following is true of the partial pressure of a gas in a mixture?

Page 2

Question 6 6. Which of the following is part of the respiratory membrane?

Question 7 7. Consider a person breathing 100% oxygen. What would the partial pressure of oxygen be in the inspired air with an atmospheric pressure of 760 mmHg?

Question 8 8. What is the integration center for the homeostatic regulation of ventilation?

Question 9 9. Even though carbon dioxide is a cellular waste product, it is converted through a reaction with water to create bicarbonate. The bicarbonate then performs an important role after it diffuses back into the plasma. What is it?

Question 10 10. What is the molecule that transports oxygen from our lungs to our tissues?

Page 3

Question 11 11. Which of the following terms is used to express how oxygen binds hemoglobin as it passes through the lungs?

Question 12 12. Which of the following correctly represents the formula for the maximum volume of air that our lungs can hold?

Question 13 13. Consider a person undergoing strenuous exercise. Which of the following would NOT be true for this person?

Question 14 14. If a person has an intrapleural pressure of x and an intrapulmonary pressure of y, then which of the following is definitely TRUE?

Question 15 15. Which problem is caused by a lack of pulmonary surfactant?

Page 4

Question 16 16. What is the partial pressure of oxygen in the alveolar air and oxygen rich blood leaving the lungs?

Question 17 17. Which of the following is part of the lower respiratory system?

Question 18 18. Identify the molecule to which oxygen binds within red blood cells.

Question 19 19. Which of the following does NOT contribute to the efficiency of gas exchange?

Question 20 20. Which of the following is the best description of blood leaving the metabolizing tissues and returning to the lungs?

Page 5

Question 21 21. Which of the following occurs first in the lungs?

Question 22 22. Amelia was born with cystic fibrosis which is a condition that must be managed very carefully. She often has difficulty breathing because her body produces a thick, sticky mucus in her lungs which decreases the rate of airflow. Amelia has which of the following?

Question 23 23. Pulmonary function tests assess an individual's _____, which is simply the movement of air into the lungs, known as _____ and the movement of air out of the lungs, known as _____.

Question 24 24. Carbon dioxide is a waste product created during ATP synthesis. As it is being transported from our tissues back to the lungs, some of it is dissolved in plasma, the rest is converted and transported as other substances. Most of the carbon dioxide is converted into which of these substances?

Question 25 25. What would be the symptoms of low levels of hemoglobin?

Page 6

Question 26 26. Which of the following would most readily bind oxygen?

Question 27 27. What is transpulmonary pressure?

Question 28 28. 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 _____.

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

Question 30 30. What is the space between the outside of the lungs and the inside of the chest wall called?

Respiratory System: Help and Review 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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