Which of the choices below determines the direction of respiratory gas movement?

Question

Quizplus · Accepted Answer

The direction of respiratory gas movement is determined by the partial pressure gradient, which is the difference in partial pressure of a gas between two regions. Gas will always move from an area of high partial pressure to an area of low partial pressure. Factors such as temperature, solubility in water, and molecular weight/size can affect the diffusion rate of gases, but they do not determine the direction of respiratory gas movement.

Which of the Choices Below Determines the Direction of Respiratory