What membrane lines the cavities of the heart?

Study for the Aandamp;P Cardiovascular System Test. Engage with flashcards and multiple choice questions, each question includes hints and explanations. Prepare thoroughly for your test day!

Multiple Choice

What membrane lines the cavities of the heart?

Explanation:
Endocardium is the innermost layer of the heart wall, lining the chambers and covering the heart valves. It provides a smooth, low-friction surface for blood to flow and helps safeguard the inner surfaces from damage. The epicardium is the outer layer that sits on the heart muscle, part of the serous pericardium. The parietal pericardium lines the outer fibrous sac around the heart, and serous fluid is the lubricating liquid between the parietal and visceral (epicardial) layers. So the membrane that lines the cavities of the heart is the endocardium.

Endocardium is the innermost layer of the heart wall, lining the chambers and covering the heart valves. It provides a smooth, low-friction surface for blood to flow and helps safeguard the inner surfaces from damage. The epicardium is the outer layer that sits on the heart muscle, part of the serous pericardium. The parietal pericardium lines the outer fibrous sac around the heart, and serous fluid is the lubricating liquid between the parietal and visceral (epicardial) layers. So the membrane that lines the cavities of the heart is the endocardium.

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