what are the two dominant systems in the thoracic cavity
lymphatics including the thoracic duct
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Section::::Structure.

Thoracic cavity
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structures of the digestive system , including the esophagus
structures of the nervous system including the paired vagus nerves , and the paired sympathetic chains
endocrine glands , including the thymus gland
structures of the cardiovascular system , including the heart and great vessels , which include the thoracic aorta , the pulmonary artery and all its branches , the superior and inferior vena cava , the pulmonary veins , and the azygos vein
structures of the respiratory system , including the Diaphragm , trachea , bronchi and lungs