Question

Which type of epithelial cell is best adapted to aid diffusion?

a. squamous

b. cuboidal

c. columnar

d. transitional

Short answer

The correct answer is (a) squamous

Squamous epithelia specialized in aiding diffusion.

Step-by-step solution

Step1. Introduction 

Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusions, and sensory reception.

Explanation for correct answer

a. squamous

Squamous epithelia type of epithelia made of flat cells, specialized in aiding diffusion or preventing abrasion.

Explanation For Incorrect options

b. cuboidal

Cuboidal epithelia, epithelia made of cube-shaped cells, specialized in glandular functions.

c. columnar

Columnar epithelia, epithelia made of cells taller than they are wide, specialized in absorption.

d. transitional

Transitional epithelia, epithelia that can transition for appearing multilayered to simple; also called uroepithelia.