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The diaphragma isn't attached to the heart. It separates the thoracic cavity from the abdominal cavity.

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The diaphragm separates the thoracic cavity (heart, lungs & ribs) from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases and air is drawn into the lungs.

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12y ago

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