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the heart is surrounded by the pericardium. There is the visceral pericardium which is closest to the heart organ and the parietal pericardium which is the outer lining. The lungs are surrounded by the pleural membrane. There is the visceral pleura which is located closest to the lung and the parietal pleura which is the outer lining. The heart and lungs are protected from external damage by the ribcage. The sternal bone is one of the hardest bones in the body and this bone protects the heart from damage.

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the heart is bounded laterally by the lungs, in the posterior by the esophagus and trachea, and in the anterior by the rib cage.

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15y ago
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the heart is surrounded by a pericardium

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16y ago
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Q: What are the Heart and the lungs are surrounded and protected by?
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