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Respiratory system (Conduction portion (Trachea (Mucosa (Basal cells,…

- - - - Elastic fibers
      - Glands
    - - Basal cells
      - Brush (receptor) cells
      - Goblet cells (mucous)
      - Small granule cells (enteroendocrine)
      - Ciliated cells
      - Lamina propria contains BALT
      - Thick layer collagenous fibers basement membrane
  - - - Ciliated, pseudostratified columnar epi.
        
        Brush cells
        
        Small granule cells (Kulchitsky cells)
        
        Goblet cells
        
        Basal cells
        
        Ciliated cells
    - - Pseudostratified epi.
        
        Supporting (sustentacular) cells
        
        Basal cells
        
        Olfactory receptor cells
        
        Brush cells
      - Olfactory gland (Bowman's gland)
      - Olfactory nerve
      - No subM
    - - Stratified squamous epi.
      - Sebaceous glands
  - - - Secrete surface-active agent (surfactant )
      - CC16 protein marker for lung injury
        
        Chronic obstructive pulmonary disease (COPD)
        
        asthma
- - - - Simple cuboidal epi.
      - Interalveolar septum thick portion
        
        Modulates alveolar immune response
        
        Regulates fluid distribution
      - Secrete surfactant (Lamellar body)
      - Respiratory distress syndrome
    - - Hemosiderin found in heart failure patients with pulmonary congestion & edema
      - Present in both alveolar lumen, septum
    - - Simple squamous epi.
      - interalveolar septum thin portion
        
        Air-blood barrier
        
        Gas exchange