Factors That have an effect on the speed of Gas Diffusion Through the Respiratory Membrane

Referring to the sooner discussion of diffusion of gases in water, one will apply a similar principles and mathematical formulas to diffusion of gases through the respiratory membrane. Thus, the factors that confirm however speedily a gas can withstand the membrane ar (1) the thickness of the membrane, (2) the surface area of the membrane, (3) the diffusion constant of the gas within the substance of the membrane, and (4) the partial pressure distinction of the gas between the two sides of the membrane. The thickness of the metabolic process membrane sometimes increases—for instance, as a results of puffiness fluid within the opening area of the membrane and in the alveoli—so that the metabolic process gases should then diffuse not solely through the membrane however conjointly through this fluid. Also, some respiratory organ diseases cause pathology of the lungs, which might increase the thickness of some parts of the metabolic process membrane.

As a result of the speed of diffusion through the membrane is reciprocally proportional to the thickness of the membrane, any issue that will increase the thickness to more than 2 to a few times traditional will interfere considerably with traditional metabolic process exchange of gases. The extent of the metabolic process membrane are often greatly minimized by several conditions. for example, removal of a whole respiratory organ decreases the whole surface area to 1 [*fr1] traditional. Also, in respiratory illness, many of the alveoli coalesce, with dissolution of the many alveolar walls. Therefore, the new alveolar chambers ar abundant larger than the first alveoli, however the whole surface area of the metabolic process membrane is usually minimized as much as quintuple thanks to loss of the alveolar walls. once the whole extent is minimized to about one third to 1 fourth traditional, exchange of gases through the membrane is obstructed to a big degree, even underneath resting conditions, and during competitive sports and alternative strenuous exercise, even the slightest decrease in extent of the lungs will be a significant harm to metabolic process exchange of gases.

The diffusion constant for transfer of every gas through the metabolic process membrane depends on the gas’s solubility within the membrane and, inversely, on the square root of the gas’s relative molecular mass. The rate of diffusion within the metabolic process membrane is nearly exactly the same as that in water, for reasons explained earlier. Therefore, for a given pressure distinction, carbon dioxide diffuses regarding twenty times as speedily as oxygen. O diffuses regarding double as speedily as nitrogen. The pressure distinction across the metabolic process membrane is that the distinction between the partial pressure of the gas within the alveoli and therefore the partial pressure of the gas within the respiratory organ capillary blood. The partial pressure represents a live of the whole variety of molecules of a specific gas hanging a unit space of the alveolar surface of the membrane in unit time, and therefore the pressure of the gas within the blood represents the quantity of molecules that plan to shake the blood in the other way.

Therefore, the distinction between these 2 pressures may be a live of internet tendency for the gas molecules to maneuver through the membrane. once the partial pressure of a gas within the alveoli is larger than the pressure of the gas in the blood, as is true for O, web diffusion from the alveoli into the blood occurs; once the pressure of the gas within the blood is larger than the partial pressure in the alveoli, as is true for CO2, web diffusion from the blood into the alveoli happens.

14 thoughts on “Factors That have an effect on the speed of Gas Diffusion Through the Respiratory Membrane

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