The left thoracic cavity is partly filled with air occupying the pleural space.
From the en.wikipedia.org
The heart is located in the mediastinum, which is the central sub-division of the thoracic cavity.
From the en.wikipedia.org
It is separated from the thoracic cavity by the diaphragm.
From the en.wikipedia.org
When the diaphragm relaxes, air is exhaled by elastic recoil of the lung and the tissues lining the thoracic cavity.
From the en.wikipedia.org
They also wore a band on their abdomen so that most of their breathing was done by moving their thoracic cavity, the Health Ministry said in a statement.
From the online.wsj.com
They do not breathe in the same way as mammals, and do not rely on creating a negative pressure in the thoracic cavity, at least not to the same extent.
From the en.wikipedia.org
Mesothelioma usually starts in the lining of the lungs, but tumors can appear on the lining of the heart, lymph nodes or any available spot in the thoracic cavity.
From the news-journalonline.com
The rib cage itself also is able to expand and contract the thoracic cavity to some degree, through the action of other respiratory and accessory respiratory muscles.
From the en.wikipedia.org
During forced inhalation, as when taking a deep breath, the external intercostal muscles and accessory muscles aid in further expanding the thoracic cavity.