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Tissue, Cancerous epithelial cells = failure to respect basement membrane…

- - - - apical (outside or cavity of internal organ)
        
        with microvili: subsorb & secrete
        
        ex. intestine lining or kidney tubules
        
        brush border
        
        with cilia: propel substances
        
        ex. trachea lining
      - basal (connect to underlying CT)
        
        basal lamina = selective filter, determines which molecules diffusing from underlying CT can enter epithelium, also repairs wound
    - - simple
        
        squamous
        
        cuboidal
        
        columnar
      - stratified
        
        squamous
      - pseudostratified columnar
    - - tight junctions: prevent leak
      - desmosomes: keep cells from pulling apart
    - - reticular lamina = deep to basal lamina, "belongs to" underlying CT