Lecture 4- principles of gas exchange Flashcards
1
Q
what is the equation for rate of diffusion
A
surface area* pressure gradient
2
Q
define the pressure gradient
A
difference in partial pressures of the respective gases in alveolus and blood
3
Q
what is Dalton’s law?
A
partial pressure of a gas in a gas mixture = total pressure * fractional concentration of the gas
4
Q
In a solution of low solubility is the PP high or low?
A
high
5
Q
in a solution of high solubility is the PP high or low?
A
low
6
Q
What is the equation for oxygen diffusing capacity
A
oxygen uptake/ (alveolar PO2- mean pulmonary capillary PO2)
