This model casts a new light on the properties of this physiological transport system. It permits in particular to understand how several diseases among which pulmonary edema may remain asymptomatic in their early stages. 展开 关键词: lung diffusion screening efficiency edema ...
It is shown that the physiological sizes of the diffusion unit in the lung, at rest or at exercise, can be explained by physical arguments. In that sense, diffusion is the 'dimensioning criterion' of the lung at the acinar level. This approach shows that, due to diffusional screening at ...
If the ratio of the rate of diffusion of two gases is 1:3, then what is the ratio of the molecular weight? At STP, a 5.0 mL sample of gas weighs 0.024 g. What is the molecular mass of the gas? How does molar mass (and polarizability) affect van der Waals forces between neon and...
When comparing two gases to determine which one is closest to an ideal gas, which strategy is best? Which of the following gases experiences the greatest degree of deviation from ideal behavior under high pressures and low ...
To describe the mass transport through a membrane made of porous materials, the Porous Medium Equation [3] is often employed. This nonlinear diffusion equation [4] governs the internal dynamics of gas permeation. With certain justifiable simplifications, the governing equation for the external ...
(vi) Diffusion of gases (O2 and CO2) across alveolar tissues. Select an option which has correct sequence of all the steps. A(iii),(vi),(ii),(v),(i),(iv) B(iii),(vi),(i),(v),(ii),(iv) C(iv),(ii),(v),(iii),(i),(vi) D(iv),(vi),(ii),(v),(i),(iii)...
The movement of air to and from the lungs, like other passive transport processes, is dependent on a pressure gradient formed by structural modifications that take place when an organism breathes. These modifications include the movement of the rib cage during inspiration and expiration. Specialized ...
The Effects on Cells Because of Changes in pH of Body... What Happens at a Microscopic Level During Homeostasis? Which Organs Help the Human Body Get Rid of Wastes... Lithium & Low Potassium Levels Role of Ribosomes in Homeostasis Examples of Diffusion in Organs What Happens to Ce...
We were asked to determine how greenhouse gases affect atmospheric temperature. When heat from the sun enters the Earth, instead of bouncing back to...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question ...
A Mg depletion at the grain boundary next to the surface oxide is shown in Supplementary Fig. 5, which indicates that the grain boundary can enhance the outward diffusion of Mg towards the surface oxide through a short-circuit diffusion mechanism29. Fig. 2: APT analysis on the distribution ...