Stratified Epithelium

Stratified Epithelium

Contains two or more layers of cells that regenerate from the basal layer

Apical layer

Layer of cells that the shape and type of a tissue is named for

Stratified Epithelium

Contains two or more layers of cells that regenerate from the basal layer

Apical layer

Layer of cells that the shape and type of a tissue is named for

Protection

Function of stratified epithelium

Stratified squamous epithelium

Many layers of cells that are squamous in shape, thickest epithelial tissue, has two types keratinized and non-keratinized

Appear cuboidal or columnar

The deeper layers of stratified squamous epithelium

Keratinized stratified squamous epithelium

Contains the protective and waterproof protein keratin that is only found in this tissue. Surface cells are dead and full of keratin.

Non-keratinized stratified squamous epithelium

Forms moist/mucous lining of body openings

Protects underlying tissues in areas subject to abrasion

Function of stratified squamous epithelium

Forms epidermis

Location of keratinized stratified squamous epithelium

Esophagus, mouth, anus, vagina, and urethra

Location of non-keratinized stratified squamous epithelium

Stratified cuboidal epithelium

Generally two layers of cube-shaped cells

Protection

Function of stratified cuboidal epithelium

Forms ducts of mammary glands, salivary glands, and largest sweat glands

Location of stratified cuboidal epithelium

Stratified columnar epithelium

Several layers of cells with the basal cells usually being cuboidal and the zsupwerficial cells elongated

Protection and secretion

Function of stratified columnar epithelium

Found in male urethra and large ducts of some glands

Location of stratified columnar epithelium. Rare tissue type

Transitional epithelium

Has characteristics of stratified cuboidal and stratified squamous epithelium. The superficial cells are dome shaped when the bladder is relaxed and squamous when it is full.

Permits distension of urinary organs by contained urinary

Function of transitional epithelium

Epithelium of urinary bladder, ureters, and proximal urethra

Location of transitional epithelium