The heart is enclosed in:
Correct answer: D. Pericardium
- A. Perimysium
- B. Peritoneum
- C. Pleural membrane
- D. Pericardium
Explanation
The pericardium is a thin sac that surrounds the heart. It protects and lubricates the heart to reduce friction when it pumps. The pleural membrane surrounds the lungs, the peritoneum lines the abdominal cavity and surrounds intraperitoneal organs and the perimysium surrounds the bundle of muscle fibers.
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About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
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