Thoracic outlet

The thoracic outlet is the lower opening of the thoracic cavity whose edges are the lowest ribs. It is closed by the diaphragm, which separates the thoracic cavity from the abdominal cavity. The thoracic outlet or inferior thoracic aperture is much larger than the thoracic inlet (superior thoracic aperture).

单词	Inferior thoracic aperture
释义	Inferior thoracic aperture 英语百科 Thoracic outlet The thoracic outlet is the lower opening of the thoracic cavity whose edges are the lowest ribs. It is closed by the diaphragm, which separates the thoracic cavity from the abdominal cavity. The thoracic outlet or inferior thoracic aperture is much larger than the thoracic inlet (superior thoracic aperture).
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Inferior thoracic aperture

Thoracic outlet