Walls of Heart/ Layers of Heart
Wall of Heart made upto 3 layers -
1. Outer epicardium (pericardium)
2. Mycardium
3. Endocardium
1.Outer Epicardium (Visceral pericardium)
External layer; Visceral layer of serous pericardium
Smooth, slippery texture to the in out most surface of Heart
Inside epicardium are main coronary blood vessel that supply blood to and drain from heart.
2. Myocardium; Middle layer
Cardiac muscle
Thickest layer of heart which consist of cardiac muscle and coronary artery.
It is responsible for the contraction and relaxation of heart.
3. Endocardium
Innermost endocardium continuous with is thin layer of endothelium.
Provide smooth lining for inside of the heart and cover the valves and muscle of heart.
Permit smooth flow of blood inside heart.
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