Which of the following options accurately describes organisation of the diaphragm It arises as a coelomic fold which separates the pleural and peritoneal cavities It arises as the pulmonary fold which separates the lung from the chest wall, heart and oesophagus It is composed of mesoderm-derived connective tissue It separates the pericardial and pleuroperitoneal cavities It is composed exclusively of mesoderm derived connective tissue

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