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The sternocostal surface of the heart is directed anteriorly, superiorly and slightly to the left. It is formed by the left, right, superior and inferior borders of the heart.
It consists of the anterior surfaces of the:
Anteriorly, the sternocostal surface is separated by pericardium from the:
The acute angle at the anterior edge of the lungs fills the pleurae and is almost continuous across the midline except for a small, triangular area on the left of the sternocostal surface. The cardiac notch of the lung borders this laterally.
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