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Pericardium (describe it)
A sac consisting of two layers (double-walled) surrounding the heart and is composed of a superficial fibrous pericardium (outer-layer) and a deep two-layer serous pericardium (inner-layer).
Pericardium (function)
Protects and anchors the heart, prevents overfilling of the heart with blood, and allows the heart to work in a relatively friction-free environment.
Fibrous Pericardium
Outermost layer of the pericardium and it is dense, with irregular connective tissue which gives it its enormous strength.
Serous Pericardium
Inner-layer of pericardium, itself made up of two layers, the parietal layer which lines the internal sufacr of the fibrous pericardium and the visceral layer, epicardium that lines the suface of the heart.
Parietal Layer
Lines the internal surface of the fibrous pericardium
Visceral Layer/Epicardium
Lines the surface of the heart
Parietal layer and the visceral/epicardium are separated by...
The fluid-filled pericardial cavity will release serous fluid, which contains lots of molecules of similar charge, giving it a repelling frictionless environment.
The Heart Wall Consist of?
Epicardium
Myocardium
Endocardium
Epicardium (describe it)
Lines with the surface of the heart and is the visceral layer of the serous pericardium.
Myocardium (describe it)
Cardiac muscle layer forming the bulk of the heart (the functional layer) composed of cardial myocytes. It is the thickest layer.
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