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Physiology Practice Test: The Respiratory System - Pulmonary Ventilation
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Pulmonary ventilation is the process of air flowing into and out of the lungs. It's also known as breathing.  Air flows into the lungs during inhalation and out of the lungs during exhalation. This happens because of pressure differences between the atmosphere and the gases inside the lungs.  The volume of pulmonary ventilation is the total amount of air exhaled after maximal inhalation. It's about 4800mL and varies according to age and body size.  The ease of air passage and the amount of energy required for ventilation are influenced by three physical factors: Airway... Show more
Physiology Practice Test: The Respiratory System - Pulmonary Ventilation
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25 Questions

1. What is the volume of air moved into and out of the lungs in a single breath during unforced breathing called?
2. The trachea rhythmically collapses and expands during the respiratory cycle.
3. Which of the following is NOT part of the response of an airway to specific allergens that initiate an asthmatic response?
4. What is the volume of air present in the lungs when the lungs are at rest (in between breaths)?
5. Which of the following measurements cannot be determined by a spirometer?
6. What are the most common cells that line the surface of the alveoli and are therefore associated with the exchange of gases within the lungs?
7. Which of the following is a measure of the distending force across the lungs?
8. A healthy person can normally exhale what percentage of his/her vital capacity in one second?
9. The elasticity of the lungs facilitates expansion during inspiration.
10. A(n) ________ is used clinically to measure lung volumes and rates of air flow.
11. It is more efficient to increase alveolar ventilation by increasing tidal volume than by increasing respiration rate.
12. Obstructive pulmonary disorders are characterized by an interference with the expansion of the lungs.
13. What is the volume of the respiratory pathway that is not able to exchange gases (conducting pathway) called?
14. Which of the following decreases when traveling from upper airways to the conducting zone to the respiratory zone?
15. Residual volume can be measured because the lungs are able to collapse under experimental conditions.
16. What is the thin barrier (0.2 μm) that allows for the efficient exchange of gases between the lungs and the blood called?
17. Which of the following is responsible for changes in airway resistance that occur in a single breath?
18. What type of cell in the respiratory tract functions in phagocytosis of inhaled pathogens and foreign particles?
19. How do tractive forces affect the airways during inspiration.
20. A normal vital capacity is approximately ________ mL.
21. In an obstructive disease, the lungs can become overinflated because the difficulty in ________ tends to ________.
22. What are the primary inspiratory muscles?
23. What benefit are corticosteroids in the treatment of asthma?
24. What structure bifurcates into the bronchi that enter the right and left lungs?
25. What is the dome-shaped muscle that separates the thoracic and abdominal cavities and plays an important role in breathing?

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