ANATOMY

Detailed explanation-1: -The thoracic cavity is divided by the mediastinum. The heart is in the mediastinum, enclosed by the pericardium. The lungs occupy the left-right regions and the pleura lines the corresponding half of the thorax and forms the lateral mediastinal boundary.

Detailed explanation-2: -The space enclosed by the pleura, which is a thin layer of tissue that covers the lungs and lines the interior wall of the chest cavity.

Detailed explanation-3: -Within the thoracic cavity, the lungs are separated from the thoracic wall by the visceral and parietal pleurae. Between these two layers exists a potential space called the pleural cavity.

Detailed explanation-4: -The pleural cavity, pleural space, or interpleural space is the potential space between the pleurae of the pleural sac that surrounds each lung.

Detailed explanation-5: -The chest (thoracic) cavity is the area surrounded by the thoracic vertebrae, the ribs, the sternum, and the diaphragm. The lungs are housed in the chest cavity, a space that also includes the mediastinum.