Mechanics of Breathing Flashcards
What is the plural space?
The space between the surface of the lungs and the chest wall filled with plural fluid
What is the visceral plural?
The plural membrane covering the surface f the lung
What is the parietal plura?
The plural membrane covering the inner surface of the chest wall
In healthy plura how much intrapleural fluid?
3ml
What is the term for inflammation of the lungs?
Pleurisy
What is the value for the intaplural pressure?
-3 mmHg
Why does the intraplural pressure have to be negative?
To ensure that the lung does not recoil due to the elastic fibers in the lungs
What muscles are used in inspiration?
External intercostal muscles
Diaphragm
What muscles are used in expiration?
Passive at rest
Internal intercostal muscles
Abdominal muscles
What is the intrathoracic (Alveolar) Pressure (Pa)?
Pressure inside the thorasic cavity (inside the lungs)
What is the intra-pleural pressure (Pip)?
The pressure inside the pleural cavity
What is the transpulmonary pressure (Tp)
The pressure difference between the alveolar and the intrapleural pressure
