Volumes and ventilation Flashcards
1
Q
Minute ventilation
A
Tidal volume x breathing frequency
2
Q
3 collapsing forces of the lung
A
- Surface tension
- Lung elastic recoil
- Compliance
3
Q
Compliance
A
Change in volume/Change in pressure
4
Q
What does fibrosis do to compliance
A
Decrease it
5
Q
What is the idea of Laplace’s law
A
as radius decreases, pressure increases
6
Q
What does surfactant do
A
decreases surface tension
alvioli are small, because of the small radius, pressure for them to collapse is strong. surfactant makes it harder for this to happen
7
Q
What produces surfactant
A
alveolar type 2 cell
