A membrane in the midline of the THORAX of mammals. It separates the lungs between the STERNUM in front and the VERTEBRAL COLUMN behind. It also surrounds the HEART, TRACHEA, ESOPHAGUS, THYMUS, and LYMPH NODES.
D008875
Middle Aged
An adult aged 45 - 64 years.
Middle Age
D011031
Pneumothorax, Artificial
Injection of air or a more slowly absorbed gas such as nitrogen, into the PLEURAL CAVITY to collapse the lung.