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25 Cards in this Set
- Front
- Back
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Inflow and outflow of air between the atmosphere and the lung alveoli |
Pulmonary ventilation |
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Pressure difference between that in the alveoli and that on the outer surfaces of the lungs; the difference bet. Alveolar and pleural pressure |
Transpulmonary pressure |
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The elastic forces in the lungs that tend to collapse the lungs at each instant of respiration |
Recoil pressure |
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The extent to which the lungs will expand for each unit increase in transpulmonary pressure (in enough time is allowed to reach equilibrium) |
Lung compliance |
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Normal total compliance of both lungs? |
200 mL of air per centimeter of water transpulmonary pressure |
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On the inner surface of the alveoli, the water surface is attempting to contract. This results in an attempt to force air out of the alveoli through the bronchi and, in doing so, causes the alveoli to collapse. The net effect is to cause an elastic contractile force of the entire lung called ____ |
Surface tension elastic force |
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Under resting conditions, the respiratory muscles normally do not perform "work" to cause inspiration, but to cause expiration. T or F? |
False. The respi muscles normally perform work to cause inspiration, but not to cause expiration. (p.468) |
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The "work" of inspiration can be divided into three fractions. What is the work that is required to overcome the viscosity of the lung and chest wall structures? |
Tissue resistance work |
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The "work" of inspiration can be divided into three fractions. What is the work that is required to expand the lungs against the lung and chest elastic forces? |
Compliance work or elastic work |
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The "work" of inspiration can be divided into three fractions. What is the work that is required to overcome airway resistance to movement of air into the lungs? |
Airway resistance work |
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What do you call a method for recording the volume movement of air into and out of the lungs? |
Spirometry |
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This change in pulmonary volume refers to the volume of air inspired or expired with each normal breath. It amounts to how how many mL? |
Tidal volume 500 mL |
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This change in pulmonary volume refers to the extra volume of air that can be inspired over and above the normal tidal volume when the person inspires with full force. How many mL? |
Inspiratory reserve volume 3000 mL |
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This change in pulmonary volume refers to the maximum extra volume of air that can be expired by forceful expiration after the end of a normal tidal expiration. This is normally how many mL? |
Expiratory reserve volume 1,100 mL |
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This change in pulmonary volume refers to the volume of air remaining in the lungs after the most forceful expiration, and averages to about ____ mL. |
Residual volume 1200 mL |
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Inspiratory capacity = ? Total mL? |
Tidal volume + inspiratory reserve volume 3,500 mL |
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Functional residual capacity? Total mL? |
Expiratory reserve volume + residual volume 2,300 mL |
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Vital capacity? |
Inspiratory reserve volume + tidal volume + expiratory reserve volume 4,600 mL |
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Total lung capacity? How much mL? |
Vital capacity + residual volume 5,800 mL |
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This refers to the amount of air a person can breathe in, beginning at the normal expiratory level and distending the lungs to the max amount. |
Inspiratory capacity/ IC |
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This is the amount of air that remains in the lungs at the end of normal expiration. |
Functional residual capacity/ FRC |
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This is the max amount of air a person can expel from the lungs after first filling the lungs to their max extent and then expiring to the max extent |
Vital capacity/VC |
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This is the maximum volume to which the lungs can be expanded with the greatest possible effort. |
Total lung capacity/TLC |
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Total amount of new air moved into the respiratory passages each minute; equal to _____ and ______ per minute. |
Minute respiratory volume Tidal volume + respiratory rate per minute |
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The rate at which new air reaches the alveoli, alveolar sacs, alveolar ducts, and respiratory bronchioles. |
Alveolar ventilation |
