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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 dome-shaped muscle that separates the thoracic and abdominal cavities and plays an important role in breathing?
2. As the lungs expand, intra-alveolar pressure ________ and air moves ________ the lungs.
3. Which of the following is true when the lung volume is equal to the functional residual capacity?
4. As the volume of the chest wall increases, the concomitant expansion of the lungs is due to a(n) ________.
5. A decrease in ________ is indicative of a restrictive pulmonary disease.
6. A decrease in ________ is indicative of an obstructive pulmonary disease.
7. Which of the following is NOT a function of the respiratory system?
8. What type of cells secrete mucus in the respiratory tract?
9. The transition from the conducting to the respiratory zone in the lungs occurs at the ________.
10. A normal tidal volume at rest is approximately ________ mL.
11. Which of the following is NOT involved in altering the resistance of the airway to air movement?
12. What benefit are corticosteroids in the treatment of asthma?
13. The ________ is bounded by the interior surface of the chest wall and the exterior surface of the lung.
14. Which of the following specifically describes the movement of air into and out of the lungs?
15. Functional residual capacity is comprised of which of the following?
16. Activation of the sympathetic nervous system causes bronchodilation.
17. Which of the following processes is NOT a part of external respiration?
18. Air flows between alveoli through pores.
19. What is the volume of air moved into and out of the lungs in a single breath during unforced breathing called?
20. The lung is expanded during inspiration by the transpulmonary pressure that pulls on the lung as the chest wall expands.
21. The presence of a negative intrapleural pressure at maximum expiration is responsible for which of the following?
22. Which of the following is a measure of the distending force across the lungs?
23. The difference between what two pressures drives air into and out of the lungs?
24. What is the term for the volume of air that reaches the respiratory zone each minute?
25. The distending pressure across the lungs is the intrapleural pressure.

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