What is the mediestinum?

The mediastinum is the central compartment of the thoracic cavity, situated between the lungs. It contains vital structures including the heart, major blood vessels, trachea, esophagus, and thymus gland. The mediastinum is divided into several regions: the superior mediastinum and the inferior mediastinum, which is further divided into anterior, middle, and posterior parts. Its role is crucial in providing support and protection to these organs and facilitating communication between different thoracic structures.