Final answer:
The parietal pleura lines the internal thoracic wall, while the visceral pleura tightly covers the lung.
Step-by-step explanation:
The inside of the chest is lined by two layers of pleura: the parietal pleura lines the internal thoracic wall, and the visceral pleura tightly covers the lung.
The parietal pleura is the outer layer that connects to the thoracic wall, while the visceral pleura is the innermost layer that is superficial to the lungs and extends into the lung fissures.
The space between these layers, known as the intrapleural space, contains a small amount of fluid that protects the tissue and reduces friction.