What is the origin of the definitive myocardium of the adult heart?
- Endoderm
- Somatopleuric mesoderm
- Hypoblast
- Splanchnopleuric mesoderm
The Correct option is D
Explanation with High Yield Facts:
- Myocardium - The myocardium or cardiac muscle arises from splanchnopleuric mesoderm that invests the primary heart tube. The myocardium secretes the cardiac jelly and gives rise to the conduction system.
- Epicardium (visceral pericardium) - This outer tunic of thin serous membrane covers the myocardium. It is derived from splanchnopleuric mesoderm and also forms the coronary vessels.
- Endocardium - This lining of the heart tube is derived from the lateral endocardial tubes. It consists of endothelium and a thin subendothelial connective tissue.
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