Which surface of the heart lies on the plane opposite the spine?

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Multiple Choice

Which surface of the heart lies on the plane opposite the spine?

Explanation:
The surface that lies opposite the spine is the posterior surface of the heart. This face, often called the base, is directed toward the vertebral column and is mainly formed by the left atrium (with contributions from the right atrium). It’s the orientation that places this surface away from the sternum and toward the back, toward the thoracic vertebrae. The anterior (sternocostal) surface faces the chest wall, the diaphragmatic surface rests on the diaphragm, and the lateral surfaces face the lungs.

The surface that lies opposite the spine is the posterior surface of the heart. This face, often called the base, is directed toward the vertebral column and is mainly formed by the left atrium (with contributions from the right atrium). It’s the orientation that places this surface away from the sternum and toward the back, toward the thoracic vertebrae. The anterior (sternocostal) surface faces the chest wall, the diaphragmatic surface rests on the diaphragm, and the lateral surfaces face the lungs.

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