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Which organs are contained within the thoracic cavity?

  1. Heart and Stomach

  2. Heart and Lungs

  3. Lungs and Hypothalamus

  4. Heart, Lungs, and Stomach

The correct answer is: Heart and Lungs

The thoracic cavity is primarily responsible for housing vital organs related to the respiratory and circulatory systems. This cavity is bounded by the rib cage and the diaphragm and contains the heart and lungs, which are essential for oxygen exchange and blood circulation. The heart is located within the mediastinum, a space in the thoracic cavity, and is critical for pumping blood throughout the body. The lungs, situated on either side of the heart, facilitate the exchange of oxygen and carbon dioxide during respiration. Other options either include organs not found in the thoracic cavity, like the stomach (which is located in the abdominal cavity), or suggest pairs that do not accurately represent the primary contents of the thoracic cavity. The hypothalamus, mentioned in another option, is a part of the brain located in the cranial cavity, and does not belong to the thoracic cavity's contents. Thus, the combination of the heart and lungs accurately illustrates the primary organs located within the thoracic cavity, making this the correct choice.