Which of the choices below determines the direction of respiratory gas movement?
A) solubility in water
B) partial pressure gradient
C) the temperature
D) molecular weight and size of the gas molecule

Question

Quizplus · Accepted Answer

The partial pressure gradient determines the direction of respiratory gas movement. Gas molecules always move from an area of higher partial pressure to an area of lower partial pressure until equilibrium is reached. This is known as diffusion.

Which of the Choices Below Determines the Direction of Respiratory