Which Respiratory Surface Property Enhances the Diffusion of Respiratory Gases

Question

Which respiratory surface property enhances the diffusion of respiratory gases?
A) cool temperatures
B) a large surface area
C) a thick epithelial layer
D) the presence of active transport pumps

Accepted Answer

A large surface area enhances the diffusion of respiratory gases by providing more space for gas exchange to occur, following Fick's law of diffusion which states that the rate of diffusion is proportional to the surface area and inversely proportional to the thickness of the membrane.