Functions:
The primary function of the pleura is to separate the two lungs in the human body. It helps to keep two lungs away from each other through it remains air-tight. If one lung is punctured or collapsed due to an accident still the other pleural cavity still remains air-tight. It acts as a cushion for the lungs and allows smooth movements of the lungs. It secretes pleural fluid that lubricates the lungs while functioning which prevents friction; it covers and protects lung tissue. It acts as a shock absorber and prevents the lungs from getting any direct injury.
Diseases:
Diseases of pleura are inflammation of the pleura is known as pleuritis. The excess fluid that accumulates in the two pleural layers is known as pleural effusion.
Interesting Facts:
The pleural cavity is further separated into the left and right sides by the heart and pericardial cavity.
