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Epithelial Tissue Functions and Structure

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Epithelial Tissue Functions and Structure

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Questions and Answers

What is the main function of tight junctions?

Maintain cell polarity by preventing migration of proteins between apical and basal surfaces (correct)

Support epithelium

Provide direct communication between adjacent cells

Resist shearing forces

Which protein is responsible for linking adherens junctions to actin microfilaments in the cell cytoplasm?

Claudins

Desmoplakin

Catenin (correct)

Occludins

What is the role of hemidesmosomes in epithelial tissue?

Preventing pulling apart of muscle cells

Providing direct communication between adjacent cells

Supporting epithelium

Connecting epithelia to basement membrane (correct)

Which type of tissue is responsible for producing the reticular lamina?

Connective tissue Signup and view all the answers

What is the role of basement membrane in epithelia?

Supporting epithelium Signup and view all the answers

Which type of junction forms a junctional complex when combined with tight and adherens junctions?

Desmosome Junctions Signup and view all the answers

What is the primary function of simple squamous epithelium?

Filtration Signup and view all the answers

How does simple cuboidal epithelium differ from simple squamous epithelium in terms of cell structure?

Simple cuboidal epithelium has cells that are cube-shaped and line the kidney tubules. Signup and view all the answers

What is the main characteristic of stratified squamous epithelium?

Multiple layers providing protection against mechanical stress Signup and view all the answers

Which type of epithelium appears to have multiple layers but all cells are in contact with the basement membrane, making it functionally a simple epithelium?

Pseudostratified columnar Signup and view all the answers

Where in the body would you find transitional epithelium and what is its main function?

Located in the urinary bladder to allow stretching Signup and view all the answers

What differentiates pseudostratified columnar epithelium from true stratified columnar epithelium?

Presence of cilia on the apical surface of cells Signup and view all the answers