Identify three major epithelial tissue types and one key function each.

Identify three major epithelial tissue types and one key function each.

• A. Simple squamous—diffusion/filtration; Simple cuboidal—absorption/secretion; Simple columnar—absorption/secretion (often with microvilli); Stratified squamous—protection.
• B. Simple squamous—protection; Simple cuboidal—diffusion; Simple columnar—filtration; Stratified squamous—secretion.
• C. Simple squamous—absorption; Simple cuboidal—protection; Simple columnar—diffusion; Stratified squamous—filtration.
• D. Simple squamous—secretion; Simple cuboidal—filtration; Simple columnar—diffusion; Stratified squamous—absorption.

Answer: (A)