Simple epithelia

Definition

Simple epithelia consist of a single layer of cells that cover surfaces or line cavities. They are specialized for functions such as absorption, secretion, and filtration.

5 Must Know Facts For Your Next Test

1. Simple epithelia are classified into three main types: squamous, cuboidal, and columnar.
2. Simple squamous epithelium is found in areas where rapid diffusion is necessary, such as the alveoli in the lungs.
3. Simple cuboidal epithelium is often found in glandular tissues like the thyroid and kidney tubules.
4. Simple columnar epithelium lines most of the digestive tract from the stomach to the rectum.
5. Goblet cells, which secrete mucus, are commonly found within simple columnar epithelia.

Review Questions

• What are the three main types of simple epithelia?
• Where can you find simple squamous epithelium in the body?
• What function do goblet cells serve within simple columnar epithelia?

Related terms

Stratified Epithelia: Consist of multiple layers of cells that provide protection against abrasion.

Glandular Epithelium: Specialized epithelial tissue involved in secretion.

Basement Membrane: A thin layer that separates epithelial tissue from underlying connective tissue and provides structural support.