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21 Cards in this Set
- Front
- Back
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What is Boyle's law?
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At set temperature P X V always remains the same
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How do we change the volume of the thoracic cavity?
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skeletal muscles
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what are the lugs tightly attached to?
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chest wall
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When do the lung passively expand and recoil?
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as chest moves
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What is Boyle's law?
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At set temperature P X V always remains the same
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How do we change the volume of the thoracic cavity?
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skeletal muscles
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what are the lugs tightly attached to?
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chest wall
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When do the lung passively expand and recoil?
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as chest moves
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What is Patm?
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Atmospheric pressure
The pressure outside of our body 760 torr |
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What is Ppul?
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Intrapulmonary pressure
Pressure of air in the alveoli of the lungs |
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What are the phase of respiration?
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inspiration
expiration |
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Changes in Ppul causes?
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air to flow in and out of the body
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What is Pip
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Intrapleural pressure
-the pressure found between the layers of the pleural membrane that surround the lungs |
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What does Transpulmanary pressure form?
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Vacuum
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What are the forces pulling the parietal pleural layer outward?
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Natural position of chest wall
skeletal muscle contraction when breathing |
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What are the forces puling the visceral pleural layer inward?
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natural elasticity of lung tissue
Surface tension of alveolar fluid--moisture in the lungs pulls aveoli inward |
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What is pneumothorax?
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Air enters the interpleural space Pip
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Air enters the interpleural space Pip
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Pneumothorax
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How can pneumothorax occur?
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spontaneously (visceral layer is damaged)
trauma (parietal layer is damaged) |
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What happens when Pip increases to match Ppul?
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vaccum is gone lung collapses
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How do you reestablish vacuum for lung to inflate
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needle to aspirat air
chest tube |
