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6 Cards in this Set
- Front
- Back
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What is compliance of the lung
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The volume changer per unit pressure change or the slope of the pressure-voume curve.
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What causes a reduction in lung compliance
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pulmonary fibrosis, alveolar edema, atalectasis, increase in CVP
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what causes an increase in compliance
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emphysema and asthma
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what is laplace's law
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pressure = (4 x surface tension)/radius
-when only one surface is involved in liquid lined spherical alveolus then the numerator is 2 x surface tension. |
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what is surfactant
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phospholipid in which dipalmitoyl phosphatidylcholine (DPPC) is an important constituent. Made by type II cells.
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what are the physiologic advantages of surfactant
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increase in the compliance of the lung and reduction of the work of expanding lung with each breath.
-increased stability of the alveoli -keep alveoli dry |
