What is the outermost layer of the heart?

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Multiple Choice

What is the outermost layer of the heart?

Explanation:
The outermost layer of the heart is the epicardium, the visceral layer of the serous pericardium that directly covers the heart’s surface. Inside the heart wall, the layers run endocardium (lining the chambers), then myocardium (the muscular pumping layer). The parietal pericardium forms the outer boundary of the pericardial sac around the heart, with a small pericardial space between the visceral (epicardium) and parietal layers. So epicardium sits on the outside of the heart, making it the outermost layer.

The outermost layer of the heart is the epicardium, the visceral layer of the serous pericardium that directly covers the heart’s surface. Inside the heart wall, the layers run endocardium (lining the chambers), then myocardium (the muscular pumping layer). The parietal pericardium forms the outer boundary of the pericardial sac around the heart, with a small pericardial space between the visceral (epicardium) and parietal layers. So epicardium sits on the outside of the heart, making it the outermost layer.

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