Diaphragmatic surface of heart

The diaphragmatic surface of the heart, directed downward and slightly backward, is formed by the ventricles, and rests upon the central tendon and a small part of the left muscular portion of the diaphragm.

It is separated from the base by the posterior part of the coronary sulcus, and is traversed obliquely by the posterior longitudinal sulcus.

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• Diagram at columbiasurgery.org

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