The human heart is enclosed in a double-walle | vedclass

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(B) The human heart is protected by a double-walled membranous sac known as the $Pericardium$.This sac consists of two layers: the outer fibrous peric

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Pericardium

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(B) The human heart is protected by a double-walled membranous sac known as the $Pericardium$.This sac consists of two layers: the outer fibrous pericardium and the inner serous pericardium.The space between these two layers is called the pericardial cavity,which contains pericardial fluid.This fluid reduces friction between the heart walls and the surrounding tissues during the contraction and relaxation of the heart.

The human heart is enclosed in a double-walled sac called:

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