The serous membrane surrounding the heart is called what?

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Multiple Choice

The serous membrane surrounding the heart is called what?

The heart is enclosed by a protective sac called the pericardium. This sac has a fibrous outer part and a serous inner part that forms two layers: the parietal layer lining the sac and the visceral layer that covers the heart itself (the latter is what we refer to as the epicardium when talking about the heart’s outer surface). The small space between these serous layers contains lubricating fluid to reduce friction as the heartbeats. The peritoneum is a lining of the abdominal cavity, not the heart; the endocardium lines the inside of the heart chambers; the epicardium is the visceral layer of the serous pericardium, not the entire membrane around the heart.

The heart is enclosed by a protective sac called the pericardium. This sac has a fibrous outer part and a serous inner part that forms two layers: the parietal layer lining the sac and the visceral layer that covers the heart itself (the latter is what we refer to as the epicardium when talking about the heart’s outer surface). The small space between these serous layers contains lubricating fluid to reduce friction as the heartbeats. The peritoneum is a lining of the abdominal cavity, not the heart; the endocardium lines the inside of the heart chambers; the epicardium is the visceral layer of the serous pericardium, not the entire membrane around the heart.

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