Which medical term refers to the sac that encloses the heart?

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Multiple Choice

Which medical term refers to the sac that encloses the heart?

The sac that encloses the heart is the pericardium. It forms a protective fibrous-serous sac around the heart and creates a small pericardial cavity that contains a little lubricating fluid to reduce friction as the heart beats. The other options refer to different parts of the heart: the myocardium is the muscular layer that actually contracts to pump blood; the endocardium lines the interior chambers and valves; the aorta is the main artery carrying blood away from the heart. Knowing that the pericardium is the surrounding sac helps you quickly identify questions about heart coverings.

The sac that encloses the heart is the pericardium. It forms a protective fibrous-serous sac around the heart and creates a small pericardial cavity that contains a little lubricating fluid to reduce friction as the heart beats. The other options refer to different parts of the heart: the myocardium is the muscular layer that actually contracts to pump blood; the endocardium lines the interior chambers and valves; the aorta is the main artery carrying blood away from the heart. Knowing that the pericardium is the surrounding sac helps you quickly identify questions about heart coverings.

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