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21 Cards in this Set
- Front
- Back
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draw out all these relationships:
IC: inspiratory capacity FRC: functional reserve capacity VC: vital capacity RV: residual volume IRV: inspiratory reserve volume ERV: expiratory reserve volume Tidal volume |
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how can we calculate TLC once we have someone breathe in a known concentration of He
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what does detergent do to surface tension?
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dec surface tension
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what is the major component of surfactant?
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dipalmitoyl phosphatidylcholine
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Increasing volume causes increasing elastance (collapse tendancy) of the lung/chest wall unit. Both favor return to ___
Increased lung volume makes lung units more stable (due to which law?) However, surface tension is lowest at low lung volumes due to the properties of _____ |
FRC
Laplace surfactant |
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Compliance of the Lung Separate from the Chest Wall
why is this imp to know? |
Important to measure in lung disease
Need to know the pressure to distend the lung independent of the chest wall, i.e. the transpulmonary pressure rather than the transthoracic pressure as a function of volume |
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what's alveolar pressure?
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Why PTP = PEL?
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flow =
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limitations:
Laminar flow Newtonian liquids (no change in viscosity with velocity) Rigid circular tubes |
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Laminar Flow Requires the Least/most Pressure Drop for a Given Flow
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least
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reynald's number equal to
mention viscosity, tube diameter, average velocity |
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Cross Section Area Increases with Airway Generation
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what's minute volume?
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break down the pressure drops that air experiences from mouth to alveoli
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restrictive lung disease vs obstructive
give me 3 ex of each |
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resistance model of the lung
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where is airway is resistance the least...
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Distribution of Airways Resistance by Airway Generation
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Airways Resistance Changes With
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Lung Volume
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flow volume loop
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t/f
maximal expiratory flow is dependent on effort |
f
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t/f
maximal expiratory flow is dependent on effort |
f
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