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Use the figure below to answer the following question.
Figure 11.3.1
-Refer to Figure 11.3.1. Which one of the following statements is false?
Pleural Cavity
The slim, fluid-filled gap located between the two pleural layers surrounding each lung, which plays a role in the mechanics of breathing.
Pericardial Sac
A double-walled sac containing the heart and the roots of the great vessels, providing protection against infection and supplying lubrication for the heart.
Myocardium
The thick middle layer of the heart wall composed of cardiac muscle cells; responsible for the heart's contractile activity.
Epicardium
The outermost layer of the heart's wall, part of the heart's protective covering and involved in the production of pericardial fluid.
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