Question

1. Which cell shape works best for diffusion of gases from the lung alveoli to the blood?
A) Cuboidal B) Fibrous C) Columnar D) Squamous

Answer 1

To maximize the rate of diffusion, you want to minimize the distance required for the gas to diffuse across. Which cell type is the thinnest?

Answer 2

it depends upon surface area also so fibrous will be best for this....

Answer 3

its squamous (D)