Thoracic Cavity

the Lungs ,

the Heart ,

the thoracic Aorta ,

the main Pulmonary Artery and its branches,

the Thymus Gland ,

the Trachea and Bronchi and

the Esophagus .

It contains the potential space called the Pleural Cavity and the Mediastinum .

If the thoracic cavity is breached from the outside, as by a bullet wound or knife wound, a Pneumothorax , or air in the cavity, usually results, often leading to one or both lungs collapsing and requiring immediate medical attention.

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Thoracic Cavity