Name the two major ventral cavities and their contents.

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The ventral body cavity is organized into two main compartments: the thoracic cavity and the abdominopelvic cavity. The diaphragm forms the dividing line between them. Inside the thoracic cavity are the heart and lungs, with the heart housed in the pericardial cavity and the lungs in the pleural cavities. The abdominopelvic cavity contains the organs of the abdominal and pelvic regions, including most of the digestive organs (stomach, intestines, liver, spleen), the kidneys, bladder, and reproductive organs. This pairing captures the principal contents of the two major ventral compartments, which is why it’s the best fit.