Question
Describe the structure of the heart wall.
✓
Answer
- The heart wall is composed of three layers, viz. outer epicardium, middle myocardium and inner endocardium.
- Epicardium is composed of single layer of mesothelium having flat epithelial cells.
- Myocardium is composed of cardiac muscle fibres. These muscle fibres perform the function of systole and diastole by showing contraction and relaxation of muscle wall of the heart.
- Endocardium is composed of single layer of flat epithelial cells called endothelium.
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