Question

justify thickness of wall of alveloi sac

Answer 1

the alveoli are located in the respiratory zone of the lungs,at the ends of the alvelour ducts and alvelour sac representing the smallest unit in the respiratory tract ,they are provide total surface area about 75 msq

Answer 2

Explanation:

0.2 to 2.5 µm

• The thickness of the alveolar-capillary barrier varies from 0.2 to 2.5 µm. The wall of the capillary endothelial cell is fused to that of the alveolar cell with only a very thin basement membrane between these two cells. This produces a very narrow gap across which oxygen and carbon dioxide can rapidly diffuse.