Week 3 - gas exchange Flashcards
1
Q
Dalton’s Law
A
The total pressure of a mixture of gases equals the sum of the partial pressures of the individual gases
in that mixture
Oxygen = 159 mm Hg
Nitrogen = 593 mm Hg
O2 + N2 = 752 mm Hg
2
Q
Partial pressure
A
Pressure exerted by each individual gas in a gas mixture
3
Q
% of gases in the atmosphere
A
O2 = 20.93% N2 = 79.04% CO2 = 0.03%
of 760mm Hg
4
Q
Henry’s Law
A
Solubility and Partial Pressure of a gas are linearly related. If the partial pressure of a gas increases, so will the solubility
5
Q
What is the partial pressure of O2 in the atmosphere
A
159 mm Hg
6
Q
What is the partial pressure of CO2 in the tissues
A
46 mm Hg
7
Q
What is the PO2 in the lungs
A
100 mm Hg
8
Q
What is the PO2 in the tissues
A
40 mm Hg
