Surfaces of the heart

sterno-costal surface of the heart
This surface is formed by
1-Right Atrium mainly
2-Right ventricle
3-left ventricle
The two ventricles are separated by anterior inter-ventricular groove which contains ( Right iter-ventricular groove $ great cardiac vein)
*This surface is related to
1- The sternum and costal cartilage
2-Thymus gland
3-sterno-pericardial ligaments
4-sterno-costalis muscle
5-left lung and pleura
6-internal thoracic vessels

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