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Body cavity, Dorsal mesentery → Double layers - Coggle Diagram

- - - - Mesoderm of the body wall form:
        
        Definitive wall of the thorax
        
        Pleuropericardial membranes:
        ⇒Contain: Common cardial veins & Phrenic nerves
        ⇒ In adult form → Fibrous pericardium
        
        Pleuropericardial mb fuse with:
        
        Each others
        
        Root of the lungs
        
        Thoracic cavity
        
        Pericardial cavity
        
        2 pleural cavities
    - - Peripheral rim
      - Pleuroperitoneal folds fuse with:
        
        Mesentery of esophagus
        
        Septum transversum (tendinous part of diaphragm)
      - Myoblast (somites) → Muscular part of the diaphragm
      - Derived from:
        
        Septum transversum
        
        2 pleuroperitoneal mb
        
        Somites at cervical segment 3-5
        
        Mesentery of esophagus
      - Hernia:
        
        Congenital diaphragmatic hernia (malformation)
        
        Peritoneal & pleural cavities are continuous
        
        90% left side