Of the factors that influence diffusion of respiratory gases, the most variable and, therefore, important factor to consider is the

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The concentration gradient is the most variable and important factor in determining the rate of diffusion of respiratory gases. This is because it is influenced by several other factors, such as partial pressure, altitude, and exercise, which can vary widely in different situations. The other factors listed (diffusion distance, membrane surface area, membrane thickness, and electrical charge) are less variable and can be more easily controlled, either by the anatomical structure of the respiratory system or by medical intervention.

Of the Factors That Influence Diffusion of Respiratory Gases, the Most