Which of the following conditions can increase the length of the diffusion path?
I.Fibrotic thickening of alveolar and capillary walls
II.Fluid in the alveoli
III.Interstitial edema fluid
IV.Capillary vasoconstriction

Question

Quizplus · Accepted Answer

Various abnormal conditions can increase the diffusion path length, including the following: 
(1) fibrotic thickening of alveolar and capillary walls; 
(2) interstitial edema fluid, separating alveolar and capillary membranes; 
(3) fluid in the alveoli; 
(4) interstitial fibrotic processes that thicken the interstitial space; and 
(5) dilated, engorged capillaries, which allow red blood cells to flow side by side.

Which of the Following Conditions Can Increase the Length of the Diffusion