Epithelial Tissues Quiz

Epithelial Tissue Functions

• The primary function of stratified squamous epithelium is to protect against mechanical and chemical stresses.
• Nonkeratinized stratified squamous epithelium is commonly found in the lining of the oral cavity, esophagus, and vagina.

Characteristics of Keratinized Stratified Squamous Epithelium

• The superficial layer of the skin lined by keratinized stratified squamous epithelium is distinguished by the presence of dead, keratinized cells that provide a barrier against external stress.

Epithelial Cell Junctions

• Adherens junctions in epithelial cells facilitate cell-to-cell adhesion and maintain tissue integrity.
• Desmosomes in epithelial cells provide strong mechanical adhesion between cells, resisting external forces.
• The basal surface of epithelial cells adheres to the underlying basement membrane.
• Gap junctions in epithelial tissues enable direct cell-to-cell communication and exchange of ions and small molecules.

Stratified Squamous Epithelium

• The function of stratified squamous epithelium is to provide a barrier against mechanical and chemical stresses.
• Stratified squamous epithelium is found in the skin, oral cavity, esophagus, and vagina.
• The arrangement of cells in stratified squamous epithelium is layered, with basal cells differentiating into squamous cells as they move towards the surface.
• In the oral cavity, the primary function of stratified squamous epithelium is to protect against mechanical stress and abrasion from chewing and swallowing.

Test your knowledge of epithelial tissues that line the gastrointestinal tract, respiratory tract, and other organs. Questions cover topics such as cell types, functions, and locations within the body.