The '''Visceral Pleura''' which coats the outer surface of the lung is derived from the ''Splanchnic Mesoderm''. The '''Parietal Pleura''' lining the thoracic cavity is derived from ''Somatic Mesoderm'' | The '''Visceral Pleura''' which coats the outer surface of the lung is derived from the ''Splanchnic Mesoderm''. The '''Parietal Pleura''' lining the thoracic cavity is derived from ''Somatic Mesoderm'' |