Login

Human 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!

Page 1

Question 1 1. Which molecule decreases surface tension and thus makes ventilation possible?

Question 2 2. Consider the receptors that are part of the homeostatic system for regulation of ventilation. Which of the following are the central chemoreceptors sensitive to?

Question 3 3. What is transpulmonary pressure?

Question 4 4. Which of the following would NOT result from hypercapnia?

Question 5 5. Why does air move out of the lungs during expiration?

Page 2

Question 6 6. Which structure provides support and flexibility for the trachea?

Question 7 7. Why is the small amount of dissolved oxygen important for oxygen transport?

Question 8 8. Which of the following is NOT true concerning ventilation?

Question 9 9. Which of the following would most readily bind oxygen?

Question 10 10. Which of the following gestation periods is the shortest while still allowing the child to breathe on their own?

Page 3

Question 11 11. Contraction of which muscle results in inspiration?

Question 12 12. Which of the following is true of the partial pressure of a gas in a mixture?

Question 13 13. Which of the following is true of surface tension in the respiratory system?

Question 14 14. Which of the following decreases the concentration of oxygen in the alveolar air?

Question 15 15. Which of the following is the best description of blood leaving the metabolizing tissues and returning to the lungs?

Page 4

Question 16 16. Which gas law accounts for ventilation?

Question 17 17. What would be the symptoms of low levels of hemoglobin?

Question 18 18. Identify the molecule in human blood that carries oxygen.

Question 19 19. Which of the following best describes how gas exchange occurs?

Question 20 20. Which problem is caused by a lack of pulmonary surfactant?

Page 5

Question 21 21. What is the partial pressure of oxygen in the alveolar air and oxygen rich blood leaving the lungs?

Question 22 22. 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 23 23. Which of these structures is not a part of the respiratory system?

Question 24 24. Which structure is referred to as the wind pipe?

Question 25 25. If a person has an intrapleural pressure of x and an intrapulmonary pressure of y, then which of the following is definitely TRUE?

Page 6

Question 26 26. Why do we have millions of alveoli in each lung?

Question 27 27. Which of the following best describes external respiration?

Question 28 28. Consider a person undergoing strenuous exercise. Which of the following would NOT be true for this person?

Question 29 29. 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?

Question 30 30. Which of the following best explains why someone may experience shortness of breath on top of a mountain?

Human Respiratory System Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "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. You will lose your work if you close or refresh this page. Good luck!

Biology 105: Anatomy & Physiology  /  Science Courses
Support