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RESPIRATORY (EMBRYOLOGY (1 LUNG DEVELOPMENT (5 STAGES (CANALICULAR 16-25…

- - - - CANALICULAR 16-25
        
        TERMINAL BRONCHIOLES
        
        RESPIRATORY BRONCHIOLES
        
        ALVEOLAR DUCT
        
        Pneumocytes develop starting at 20 weeks.
        
        Respiration capable at 25 weeks.
      - SACCULAR 26 WEEK TO BIRTH
        
        ALVEOLAR DUCT
        
        TERMINAL SAC
        
        PRIMARY SEPTAE
      - PSEUDOGLANDULAR 5-17 WEEK
        
        TERTIARY BRONCHI
        
        ENDODERMAL TUBULE
        
        TERMINAL BRONCHIOLES+ CAPILLARY NETWORK
        
        Respiration impossible, incompatible with life.
      - EMBRONIC (4-7 WEEK)
        
        LUNG BUD
        
        TRACHEA
        
        BRONCHIAL BUDS
        
        MAINSTEM BRONCHI
        
        SECONDARY BRONCHI
        
        1 more item...
        
        Errors at this stage can lead to
        tracheoesophageal fistula.