Stratified squamous epithelium
Stratified Squamous Epithelium[edit | edit source]
Stratified squamous epithelium is a type of epithelial tissue characterized by multiple cell layers, with cells becoming increasingly flattened towards the surface and more cuboidal near the base.
Overview[edit | edit source]
This type of epithelium is designed for protection, found in areas subject to abrasion or friction. It plays a vital role in defending against microbial and physical assaults.
Structure[edit | edit source]
The stratified squamous epithelium is composed of several layers:
- Basal layer: Consisting of cuboidal cells, responsible for continual cell production.
- Intermediate layers: Cells start to flatten as they move upwards.
- Surface layers: Composed of flattened, dead cells, often keratinized in areas like the skin.
Locations and Functions[edit | edit source]
- Skin: Provides a barrier against pathogens, mechanical injury, and fluid loss.
- Oral cavity, esophagus, and vagina: Non-keratinized form, providing a moist, protective layer.
Cell Differentiation and Renewal[edit | edit source]
Cells in the basal layer continually divide, pushing older cells towards the surface. This process leads to cell differentiation and ultimately the formation of a protective, flattened layer.
Pathology[edit | edit source]
Abnormalities in this epithelium can lead to various conditions, including skin cancer, Psoriasis, and Lichen Planus.
Research and Studies[edit | edit source]
Ongoing research aims to understand how this epithelium responds to damage and how it regenerates, which is crucial for developing treatments for skin and mucosal diseases.
See Also[edit | edit source]
External Links[edit | edit source]
- National Center for Biotechnology Information - Stratified Squamous Epithelium
- Encyclopedia Britannica - Stratified Squamous Epithelium
References[edit | edit source]
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