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what is the function of the many coverings of the heart and the three layers of the heart itself?

Question

what is the function of the many coverings of the heart and the three layers of the heart itself?

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Step 1

The heart is a hollow muscular organ which is involved in pumping the blood through the circulatory system by the rhythmic contraction and dilation.

Step 2

The heart is covered by a double-layered, tough, fibro-elastic sac known as the pericardium. The pericardium is a mesothelial tissue that serves as the protective covering of the heart. It consists of two layers, an inner double layer of serous membrane (parietal and visceral pericardia) and an outer fibrous layer.

Fibrous pericardium: It is composed of dense connective tissue invo...

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