the type of epithelium that would best allow rapid diffusion

the type of epithelium that would best allow rapid diffusion, osmosis or filtration is

Solution

Epithelium or epithelial tissue is one of the four types of animal tissues, that are found as a covering sheet of cells on the surface of the body (skin), the lining of the cavities of the organ systems and the surface of blood vessels throughout the body. The epithelial cells functions in protection, cellular transport, secretion, and absorption.

There is a classification for the epithelium, according to shape and number of layer of cells. One type of epithelium is the simple squamous epithelium which comprises of a flat single layer of cells which are wide and scale-like. This type of epithelium is essential for secretion of lubricating materials.

Thus the type of epithelium that would best allow rapid diffusion, osmosis or filtration is simple squamous epithelium.

The simple squamous epithelium is found as a lining on the surface of blood vessels, lymphatic vessels, heart and the air sacs of lungs.