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Thoracic cavity - heart, lungs, thymus, esophagus, trachea
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Cranial cavity - brain
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Abdominal cavity - stomach, liver, spleen, gallbladder, pancreas, small intestine, majority of the large intestine
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Pelvic Cavity - urinary bladder and some portions of the large intestine
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Mediastinum - heart, thymus, esophagus, trachea