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Epithelium (Characteristics (Cellularity (Tight junctions (prevents…

- - - - prevents passage
    - - allow ion passage
    - - anchoring for mechanical stress
  - - - microvilli
        
        absorption
        
        simple
      - cilia
        
        sweep to protect
        
        pseudo- or stratified
      - stereocilia
        
        increase surface area w/ long distal branches
    - - occluding junction
      - anchoring
      - communication
  - - - thin, clear
      - produced by epithelia
      - barrier to proteins
    - - think, dense
      - connective tissue
      - strength, filtration
  - - - near basal lamina
      - stratum germinitivum
    - - modest
      - moderate
      - major
- - - - lungs
    - - heart
    - - abdominal organs
- - - - thin & flat
    - - square
    - - tall, slender rectangles (poop shaped)
    - - look for scalloped edge
  - - - 1 layer
    - - multiple layers
    - - look stratified but all touch basal
- - - - secrete sebum
      - released by breaking apart entire cell
      - ex. oil glands on face
      - "zits are a hole big mess"
      - lubricate and protect epidermis
    - - produced by golgi
      - released by cytoplasm shedding
      - ex. mammary gland
      - "mom gives a part of herself to her child"
      - secrete water or milk
    - - produced by golgi
      - released by vessicles
      - ex. true sweat glands
      - secrete water