Which serous membrane(s) is/are found in the thoracic cavity?

The serous membrane is a mesothelial tissue which forms the lining of particular cavities of the body internally. The serous membranes are composed of two layers: parietal and visceral layer. The parietal layer is the outer layer that lines the body cavity. The visceral layer is the inner layer that lines the internal organs. Serous membrane secretes a fluid which acts as lubricating agent and reduce friction between the layers of serous membrane.