KINE 3012 Lecture Notes - Lecture 6: Alveolar Pressure, Hypoventilation, Hyperventilation
3 Dec 2013
School
Department
Course
Professor
Document Summary
In expired air, there is an increased driving pressure of co2 from the alveoli & blood to gas. Gas that we have exist in the blood. Henry"s law - concentration of gases in a liquid. Volume of gas dissolved in a liquid is proportional to the partial pressure of the gas. Cgas = concentration of the gas, pgas = pressure of gas, k = solubility coefficient of the gas. K is very important as it determines how much gas would dissolve into our blood. K is very very low for nitrogen, so in order to dissolve nitrogen into blood, the pressure of nitrogen has to be very high *higher than atmospheric pressure* The pressure of the gas in the blood. 160mmhg of po(pressure oxygen) in the air, but becomes 100mmhg after mixing with dead space air. Pressure of o2 in the alveoli/blood becomes 100mmhg, it reaches equilibrium.
