part of innervated by adjacent to contributes to morphology of pleura thoracic cavity parietal pleura the part of the pleura external to the visceral pleura. It lines the inner surface of the chest wall, covers the diaphragm, and is reflected over the structures occupying the middle of the thorax Wikipedia:Parietal_pleura NCIT:C33273 MA:0002488 SCTID:361998003 FMA:9733 The outer serous membrane of the pulmonary pleural. pleura parietalis VHOG:0001495 EMAPA:16776 intercostal nerve organ component layer