Session 3- Gas Exchange; oxygen in the blood

Question 1

What does Dalton’s law state

Answer 1

In a mixture of gases eac h component gas exerts a partial pressure i proportion to its volume percentage in the mixture and the sum of the partial pressures of all the gases equals the total prsssur

Question 2

What is partial pressure

Answer 2

Partial pressure is the force exerted by a gas. The sum of the partial pressures of all the gases in a mixture equals the total pressure (pressure expressed in mmHg in this example)

Question 3

How do we calculate the partial pressure of a gas mixture

Answer 3

We multiply the percent of that gas times the total pressure
Where the atmospheric pressure is 88kpa we multiple the % of oxygen in the atmosphere - 20.9% changed to 0.29 times 88kpa which is 18.4kpa

Question 4

What is Henry’s law

Answer 4

The amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid and the to the gas’s solubility in that liquid