Mark the following statements as true or false. If a statement is false, correct it to make a true statement.


f. Stratified epithelia are specialized to allow substances to cross their cells rapidly.

Verified step by step guidance

1. Identify the function of stratified epithelia: Stratified epithelia are primarily designed for protection rather than rapid transport of substances.
2. Understand the structure: Stratified epithelia consist of multiple layers of cells, which makes them more protective but less permeable.
3. Compare with simple epithelia: Simple epithelia, with a single cell layer, are more specialized for absorption and filtration, allowing substances to cross more easily.
4. Evaluate the statement: Given the protective nature and multiple layers of stratified epithelia, the statement is false.
5. Correct the statement: Stratified epithelia are specialized for protection and are not designed to allow substances to cross their cells rapidly.

Key Concepts

Stratified Epithelium

Stratified epithelium is a type of tissue composed of multiple layers of cells. Its primary function is to provide protection, particularly in areas subject to abrasion, such as the skin and the lining of the mouth. Unlike simple epithelium, which allows for rapid substance exchange, stratified epithelium is not specialized for this purpose.

Function of Epithelial Tissue

Epithelial tissue serves various functions, including protection, absorption, secretion, and sensation. The specific function often depends on the type of epithelium and its location in the body. For instance, simple squamous epithelium facilitates rapid diffusion and filtration, while stratified epithelium primarily protects underlying tissues.

Cell Permeability

Cell permeability refers to the ability of substances to pass through a cell membrane. In epithelial tissues, permeability varies based on the type of epithelium. Simple epithelia, such as simple cuboidal or columnar, are more permeable and suited for absorption and secretion, while stratified epithelia are less permeable and focus on protective functions.