Tissues Flashcards
(3 cards)
Define the term ‘epithelium’ and describe the basic functions of epithelial surfaces, those covering the body and lining internal structures.
Epithelial tissue covers surfaces and separates compartments. It has no contact inhibition and forms cell-cell and cell-ECM junctions to fill any gaps between cells and cover surfaces effectively.
Explain Cell-Cell Junctions
Desmosomes (adhering junctions) provide firm anchorage
Tight/Occluding Junctions seal intracellular spaces
Gap Junctions allow for cell-cell communication (literally have gaps between the cells)
Explain Cell- ECM Junctions
Hemidesmosomes