A Summary of Epithelial Tissue Organizational Types
Below each picture, give a general description of the tissue type and list locations in the body in which it is found.

Simple Squamous Epithelium:
Characteristics of simple squamous epithelial tissue:
It is the simplest of the epitheliums. It is a single layer of flat cells, disc-shaped, not much cytoplasm. BY
Examples of simple squamous epithelial tissue:
Found in the lining of the heart, blood vessels, lymphatic vessels; in the air sacs of lungs. BY

2. Simple Cuboidal Epithelium
Characteristics of simple cuboidal epithelial tissue:
It is a single layer of cube shaped cells. BY
Examples of simple cuboidal epithelial tissue:
It is found in the kidney tubules; ducts and secretory portions of small glands; and ovary surface. BY

Simple Columnar Epithelium
Characteristics of simple columnar epithelial tissue:
It is a single layer of tall cells. Some cells have cilia; may have mucus-secreting unicellular glands. BY
Examples of simple columnar epithelial tissue:
One type lines most of the digestive tract (stomach and anal canal), gall bladder; ciliated variety lines small bronchi, uterine tubes, some parts of the uterus. BY

4. Pseudostratified Columnar Epithelium
Characteristics of pseudostratified columnar epithelial tissue:
This epithelial tissue is a single layer of cells with different heights. It’s function is to secrete, mostly mucus. BY
Examples of pseudostratified columnar epithelial tissue:
The nonciliated type is found in male’s sperm-carrying ducts and the ducts of large glands. The ciliated type has a variety; lining the trachea, most of the upper respiratory tract. BY

5. Stratified Squamous Epithelium
Characteristics of stratified squamous epithelial tissues:
It has a thick membrane made up of several cell layers. It protects the underlying tissue in areas that are open to abrasion. BY
Examples of stratified squamous epithelial tissues:
The nonkeratinized type makes the moist lining of the esophagus, mouth, and vagina. The keratinized (where keratin is deposited into cells) variety makes the epidermis of the skin which is a dry membrane. BY

6. Stratified Cuboidal Epithelium
Characteristics of stratified cuboidal epithelial tissues:
This type of epithelium is rarely found in the body. BY
Examples of stratified cuboidal epithelial tissues:
It is mostly found in the ducts of larger glands such as the sweat glands and mammary glands. There are typically two layers of this epithelium. BY

7. Stratified Columnar Epithelium
Characteristics of stratified columnar epithelial tissue:
This also isn’t usually found in the body. The only layer of the cell that is columnar is the apical* layer. BY
Examples of stratified columnar epithelial tissue:
Small amounts are found in the pharynx, the male urethra, and lining some ducts from the glands. BY

8. Transitional Epithelium
Characteristics of transitional epithelial tissues:
They have the ability to change their shape which allows more urine to flow through a tubelike organ. It allows more urine to be stored in the bladder. BY
Examples of transitional epithelial tissues:
This epithelium forms the lining of hollow urinary organs that stretch as they fill with urine. BY
