Macroscopic approach 3 to the pleural cavity

Abstract

In humans, the thoracic organs are protected within a bony wall, muscles, and membranes. Thus, to ensure its best protection and function, the lung is surrounded by chest ribs, thick muscles of the chest wall, and the pleura. The outer surface of the lung and the inner surface of the thoracic cage are covered by a thin elastic serous membrane which is called the pleura. The pleura and the pleural cavity are essential for the efficient function of the lung as are the pericardium and the pericardial cavity for the heart.