The diffusing capacity of the lungs for CO₂ is much higher than the diffusing capacity for O₂ because A) The diffusion coefficient for CO₂ is so much higher than that of O₂ B) The area available for CO₂ is greater because it can go through lipid membranes C) CO₂ dissolves in water much better D) The gradient for CO₂ diffusion is less E) Capillaries open up to make the diffusing capacity greater

Question

Quizplus · Accepted Answer

The diffusing capacity for carbon monoxide (CO) is much higher than that for oxygen (O2) because CO can diffuse through lipid membranes, increasing the area available for diffusion. This characteristic allows CO to cross the alveolar-capillary barrier more easily compared to O2, which primarily relies on diffusion through aqueous pores.

The Diffusing Capacity of the Lungs for CO2 Is Much

The Diffusing Capacity of the Lungs for CO₂ Is Much