The pericardium and the pericardial fluid hel | vedclass

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(A) The heart is enclosed in a double-walled membranous bag called the pericardium,which encloses the pericardial fluid.$(a)$ The pericardium and the

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Protecting the heart from friction,shocks and keeps it moist

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(A) The heart is enclosed in a double-walled membranous bag called the pericardium,which encloses the pericardial fluid.$(a)$ The pericardium and the pericardial fluid protect the heart from friction,mechanical shocks,and injuries.$(b)$ They keep the surface of the heart moist.$(c)$ They allow the heart to move freely during contraction and relaxation.

The pericardium and the pericardial fluid help in

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