Respiratory System: Tutoring Solution 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 gestation periods is the shortest while still allowing the child to breathe on their own?

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. Contraction of which muscle results in inspiration?

Question 4 4. Which of the following decreases the concentration of oxygen in the alveolar air?

Question 5 5. Which of the following would NOT result from hypercapnia?

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Question 6 6. 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 7 7. Which of the following occurs first in the lungs?

Question 8 8. Which of the following would most readily bind oxygen?

Question 9 9. Which molecule decreases surface tension and thus makes ventilation possible?

Question 10 10. Why is the small amount of dissolved oxygen important for oxygen transport?

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Question 11 11. Consider a person undergoing strenuous exercise. Which of the following would NOT be true for this person?

Question 12 12. Identify the molecule to which oxygen binds within red blood cells.

Question 13 13. 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 14 14. What would be the symptoms of low levels of hemoglobin?

Question 15 15. Which structure is referred to as the wind pipe?

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Question 16 16. What is the primary stimulant for ventilation in healthy persons?

Question 17 17. 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 18 18. Which of the following best explains why someone may experience shortness of breath on top of a mountain?

Question 19 19. Which of the following is part of the respiratory membrane?

Question 20 20. Which of the following terms is used to express how oxygen binds hemoglobin as it passes through the lungs?

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Question 21 21. Which of the following is NOT a practical application of Henry's Law?

Question 22 22. Which of the following best explains how 2,3-BPG works to help unload oxygen from hemoglobin?

Question 23 23. 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 24 24. Identify the molecule in human blood that carries oxygen.

Question 25 25. Why do we have millions of alveoli in each lung?

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Question 26 26. Which structure provides support and flexibility for the trachea?

Question 27 27. 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 28 28. 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 29 29. How many oxygen molecules can each molecule of hemoglobin bind?

Question 30 30. Why does air move out of the lungs during expiration?

Respiratory System: Tutoring Solution 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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