Summary: Patho
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1 patho
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What is the purpose of pleural fluid
lubricate lung movements during expansion and contraction -
What is trans pulmonary pressure
pressure difference between that in the alveoli and that on the outer surface of the lungs -
every time the trans pulmonary pressure increases 1cm of water the lung volume will expand too?
200ml -
Total lung complainces averages ___ ml/air per cm
200 -
how does surfactant decrease surface tension caused by water in the lungs?
by not dissolving uniformly in the fluid lining of the alveolar surfaces. -
Surfactant has from ___ to ___ the surface tension of pure water
1/2-1/12 -
Why is the thoracic cage included when determining the total resp compliance
b/c to inflate the lungs w/o cage takes 2x as much pressure -
What is the total resp compliance of the lung and the rib cage?
110ml/volume -
What is the avg pulmonary volume of the tidal volume?
500ml -
What is tidal volume?
It is the volume of air inspired or expired after each normal breath
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