The membrane that encloses and protects the heart is the
Correct answer: D. pericardium
- A. pleura
- B. peritoneum
- C. meninges
- D. pericardium
Explanation
The pericardium anchors the heart in the chest and secretes fluid that lubricates its beating. The pleura covers the lungs and the peritoneum the abdominal organs, so the membrane names follow the organs they wrap.
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The human heart is a four chambered muscular pump that maintains double circulation through the pulmonary and systemic circuits. Questions cover atria, ventricles, valves, major blood vessels, the cardiac cycle, pressure changes, the conduction system and ECG, while distinguishing arteries and veins from the chambers that receive or eject blood.
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