Flashcards in Intro Lung MechANICS Deck (8)
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1
inspiration
- diaphragm
- active process
- contraction of diaphragm
- process involved LUNG RECOIL and INTRAPLEURAL PRESSURE
2
expiration
- passive process
- relaxation
3
LUNG RECOIL
lung size is proportional to lung recoil
- force/tension that develop in the wall of the lung as the lung expands
- collapsing force
4
intrapleural pressure
- pressure in the thin film of fluid between the lung and the chest wall
- subatmospheric pressure is NEGATIVE force expand the lungs
- subatmospheric pressure is POSITIVE force to collapse the lung
5
intrapleural pressure
- is always NEGATIVE
- EXPAND THE LUNG
6
intrapleural pressure > lung recoil NEGATIVE
= LUNG EXPANDS
7
intrapleural pressure
= LUNG COLLAPSE
8
